Apostles

Bible Dictionary Apostle
"The calling of an Apostle is to be a special witness of the name of Jesus Christ in all the world, particularly of His divinity and of His bodily resurrection from the dead (Acts 1:22; D&C 107:23)."

Elder Dallin H Oaks - Apostle, Protect the Children, General Conference October 2012

"I speak from the perspective of the gospel of Jesus Christ, including His plan of salvation. That is my calling. Local Church leaders have responsibility for a single jurisdiction, like a ward or stake, but an Apostle is responsible to witness to the entire world. In every nation, of every race and creed, all children are children of God."

1 Corinthians 15:4-6

4 And that he was buried, and that he rose again the third day according to the scriptures:

5 And that he was seen of Cephas, then of the twelve:

6 After that, he was seen of above five hundred brethren at once; of whom the greater part remain unto this present, but some are fallen asleep.

Special Witnesses
President Boyd K Packer, The Witness,” Ensign, May 2014, 97
“Joseph Smith and Sidney Rigdon recorded the following after a sacred experience:

“‘And now, after the many testimonies which have been given of him, this is the testimony, last of all, which we give of him: That he lives!

“‘For we saw him’ (D&C 76:22–23).

“Their words are my words.”