What am I supposed to do on Sunday, just sit around and read my scriptures and pray all day Sunday?

Spencer W Kimball, Miracle of Forgiveness, 96–97

“The Sabbath is a holy day in which to do worthy and holy things. Abstinence from work and recreation is important but insufficient. The Sabbath calls for constructive thoughts and acts, and if one merely lounges about doing nothing on the Sabbath, he is breaking it. To observe it, one will be on his knees in prayer, preparing lessons, studying the gospel, meditating, visiting the ill and distressed, sleeping, reading wholesome material, and attending all the meetings of that day to which he is expected. To fail to do these proper things is a transgression”

Isaiah 58:13-14

13 ¶ If thou turn away thy foot from the sabbath, from doing thy pleasure on my holy day; and call the sabbath a delight, the holy of the Lord, honourable; and shalt honour him, not doing thine own ways, nor finding thine own pleasure, nor speaking thine own words:

14 Then shalt thou delight thyself in the Lord; and I will cause thee to ride upon the high places of the earth, and feed thee with the heritage of Jacob thy father: for the mouth of the Lord hath spoken it.

Do Good

Luke 6:8-10

 8 But he knew their thoughts, and said to the man which had the withered hand, Rise up, and stand forth in the midst. And he arose and stood forth.

 9 Then said Jesus unto them, I will ask you one thing; Is it lawful on the sabbath days to do good, or to do evil? to save life, or to destroy it?

Take Inventory

“The Sabbath is a day on which to take inventory—to analyze our weaknesses, to confess our sins to our associates and our Lord. It is a day on which to fast. … It is a day on which to read good books, a day to contemplate and ponder, a day to study lessons for priesthood and auxiliary organizations, a day to study the scriptures and to prepare sermons, a day to nap and rest and relax, a day to visit the sick, a day to preach the gospel, a day to proselyte, a day to visit quietly with the family … , a day for proper courting, a day to do good, a day to drink at the fountain of knowledge and of instruction, a day to seek forgiveness of our sins, a day for the enrichment of our spirit and our soul, a day to restore us to our spiritual stature, a day to partake of the emblems of [Jesus’] sacrifice and atonement, a day to contemplate the glories of the gospel and of the eternal realms, a day to climb high on the upward path toward our Heavenly Father” (The Teachings of Spencer W. Kimball, ed. Edward L. Kimball [1982], 216).'

Pray

Doctrine and Covenants 59:9–10, 13
9 And that thou mayest more fully keep thyself unspotted from the world, thou shalt go to the house of prayer and offer up thy sacraments upon my holy day;
10 For verily this is a day appointed unto you to rest from your labors, and to pay thy devotions unto the Most High;
13 And on this day thou shalt do none other thing, only let thy food be prepared with singleness of heart that thy fasting may be perfect, or, in other words, that thy joy may be full.

The above scripture goes toward answering the question, “What am I supposed to do on Sunday, just sit around and read my scriptures and pray all day?”

Elder L. Tom Perry, The Sabbath and the Sacrament

“Let us prepare and conduct ourselves on the Sabbath in a manner that will call down the blessings promised us upon ourselves and our families. “

Sacrament

Elder Terence M Vinson, Drawing Closer to God, October 2013 General Confference
"Our son Ben, when he was 16 and speaking in stake conference, asked the question, 'How would you feel if someone promised you something every week and never kept the promise?' He continued, 'Do we take seriously the promise we make when we partake of the sacrament and covenant to keep His commandments and always remember Him?'"

Sister Carole M Stephens, First Counselor in the Relief Society General Presidency, Do We Know What We Have?, General Conference October 2013
"We need the opportunity to renew our covenants each week as we partake of the sacrament. Latter-day prophets and apostles have taught that when we worthily partake of the sacrament, we can renew not only our baptismal covenant but “'all covenants entered into with the Lord.'7"

In Bryant S. Hinckley, Sermons and Missionary Services of Melvin Joseph Ballard (1949), 150

“We want every Latter-day Saint to come to the sacrament table because it is the place for self-investigation, for self-inspection, where we may learn to rectify our course and to make right our own lives, bringing ourselves into harmony with the teachings of the Church and with our brethren and sisters.”

The Sacrament Prayers
John 14:15-18

 15 If ye ^alove me, ^bkeep my ^ccommandments.
 16 And I will pray the Father, and he shall give you another ^aComforter, that he may ^babide with you for ever;
 17 Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you.
 18 I will not leave you ^acomfortless: I will ^bcome to you.

My thought on John 14:15-18
V15 and keep His commandments which He has given them.
V16-18 that they may always have His spirit to be with them.

Scripture

John 5:39

 39 Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.

Joshua 1:8
  8 This book of the ^alaw shall not depart out of thy mouth; but thou shalt ^bmeditate therein day and night, that thou mayest observe to do according to all that is written therein: for then thou shalt make thy way prosperous, and then thou shalt have good success.

Duties of an Elder

Doctrine and Covenants 108:7

7 Therefore, strengthen your brethren in all your conversation, in all your prayers, in all your exhortations, and in all your doings.

Science

Elder Richard G Scott, How to Obtain Revelation and Inspiration for Your Personal Life, General Conference April 2012

“When I am faced with a very difficult matter, this is how I try to understand what to do. I fast. I pray to find and understand scriptures that will be helpful. That process is cyclical.”

Dallin H. Oaks, "The Lord's Way", P50, Last partial paragraph 

"The source of the ancient conflict between (1) reason or intellect and (2) faith or revelation is the professor's rejection of revelation, not the prophet's rejection of reason."

Malachi 3:10  

10 Bring ye all the ^atithes into the storehouse, that there may be ^bmeat in mine house, and^cprove me now herewith, saith the Lord of hosts, if I will not ^dopen you the ^ewindows of heaven, and pour you out a ^fblessing, that there shall not be room enough to receive it.

We can try the Lord's words and prove that they work in our lives, much like one would prove a scientific principle.

Alma 32: 27, 33, 36  

27 But behold, if ye will awake and arouse your faculties, even to an experiment upon my words, and exercise a particle of faith, yea, even if ye can no more than ^adesire to believe, let this desire work in you, even until ye believe in a manner that ye can give place for a portion of my words. • • •  33 And now, behold, because ye have tried the experiment, and planted the seed, and it swelleth and sprouteth, and beginneth to grow, ye must needs know that the seed is good. • • •  36 Behold I say unto you, Nay; neither must ye lay aside your faith, for ye have only exercised your faith to plant the seed that ye might try the experiment to know if the seed was good.

Doctrine and Covenants 93:24

24And ^atruth is ^bknowledge of things as they are, and as they were, and as they are to come;

Reverence

Elder Ulisses Sores, of the Presidency of the Seventy, Be Meek and Lowly of Heart, General Conference October 2013

"Meekness is vital for us to become more Christlike. Without it we won’t be able to develop other important virtues. Being meek does not mean weakness, but it does mean behaving with goodness and kindness, showing strength, serenity, healthy self-worth, and self-control."

President Boyd K Packer, Counsel to Youth, October 2011 General Conference
“Dress modestly; talk reverently; listen to uplifting music. Avoid all immorality and personally degrading practices. Take hold of your life and order yourself to be valiant.”

Elder Robert C. Oaks, Worship through Reverence, Ensign, Dec 2009, 20–23
"Much of what we say in the Church about reverence usually focuses on being quiet in places of worship, with special emphasis on children being quiet. Certainly, quiet is a key part of reverence, but the full, rich meaning of the concept of reverence includes much more than the absence of noise and commotion. Quiet does not necessarily equal reverence."

Church Handbook of Instructions Book 2, 1.4.1 Strengthening the Home

“Followers of Christ are invited to ‘gather,’ ‘stand in holy places,’ and ‘be not moved’ (D&C 45:32; 87:8; 101:22; see also 2 Chronicles 35:5; Matthew 24:15). These holy places include temples, homes, and chapels. The presence of the Spirit and the behavior of those within these physical structures are what make them ‘holy places.’”

Exodus 3:5

“Put off thy shoes from off thy feet, for the place whereon thou standest is holy ground!”

Leviticus 19:30

  30 ¶ Ye shall keep my ^asabbaths, and ^breverence my sanctuary: I am the Lord.

Matthew 15:18

18 But those things which proceed out of the ^amouth come forth from the heart; and they defile the man.

Elder Robert C. Oaks, Worship Through Reverence, Ensign December 2009

"The core words most often found in scriptures associated with reverence are respect, love, and honor. Using these standards, we can see that reverence reflects activity of the heart, not just inactivity of the mouth."

"The respect we show for His temples and chapels is a reflection of the reverence for Him we feel in our hearts. Our degree of respect, love, and honor for the Lord is directly reflected in our reverence, as shown by our attitudes as well as by our decorum."

"Much of what we say in the Church about reverence usually focuses on being quiet in places of worship, with special emphasis on children being quiet. Certainly, quiet is a key part of reverence, but the full, rich meaning of the concept of reverence includes much more than the absence of noise and commotion. Quiet does not necessarily equal reverence."

"The measures of reverence are not complicated. Rather than letting our minds wander to the mundane things of the world, we should school our thoughts in places and times of reverence to think on the things of God: the majesty of the Atonement, eternal families, the Restoration of the gospel in its fulness. These measures of reverence would include schooling our behavior to reflect the attitudes of respect, love, and honor. They would include dressing modestly in our nicest clothes, avoiding the ultracasual fashions of the day, and avoiding loud talking and disruptive behavior in the Church building. And when in the chapel, we should seek to take “quiet” down another level, especially during the administration of the sacrament."

President David O. McKay, in Conference Report, Apr. 1967, 86.

“Reverence is profound respect mingled with love.”

“Reverence Is Love,” Children’s Songbook, #31 - Reverence Is Love

"Rev’rence is more than just quietly sitting:
It’s thinking of Father above,
A feeling I get when I think of his blessings.
I’m rev’rent, for rev’rence is love"

Elder Dallin H. Oaks, Pure in Heart (1988), 125.

“Worship often includes actions, but true worship always involves a particular attitude of mind.

“The attitude of worship evokes the deepest feelings of allegiance, adoration, and awe. Worship combines love and reverence in a state of devotion that draws our spirits closer to God."

Doctrine and Covenants 109:21

  21 And when thy people ^atransgress, any of them, they may speedily repent and return unto thee, and find favor in thy sight, and be restored to the blessings which thou hast ordained to be poured out upon those who shall ^breverence thee in thy house.

Psalms 46:10

10Be ^astill, and ^bknow that I am God: I will be ^cexalted among the heathen, I will be exalted in the earth.