Enmity

President Dallin H Oaks, Love Your Enemies, October 2020 General Conference

"The Savior’s teaching not to 'contend with anger' is a good first step. The devil is the father of contention, and it is he who tempts men to contend with anger. He promotes enmity and hateful relationships among individuals and within groups. President Thomas S. Monson taught that anger is 'Satan’s tool,' for 'to be angry is to yield to the influence of Satan. No one can make us angry. It is our choice.' Anger is the way to division and enmity. We move toward loving our adversaries when we avoid anger and hostility toward those with whom we disagree. It also helps if we are even willing to learn from them."

President Ezra Taft Benson General Conference Apr. 1989, 3–5
“The central feature of pride is enmity—enmity toward God and enmity toward our fellowmen. Enmity means ‘hatred toward, hostility to, or a state of opposition.’ It is the power by which Satan wishes to reign over us."

Elder Dallin H Oaks, The Plan and the Proclamation, General Conference October 2017

"Similarly, the writings of Jesus’s early Apostles frequently use the image of 'the world' to represent opposition to gospel teachings. 'Be not conformed to this world' (Romans 12:2), the Apostle Paul taught. 'For the wisdom of this world is foolishness with God' (1 Corinthians 3:19). And, 'Beware,' he warned, 'lest any man spoil you … after the tradition of men, after the rudiments of the world, and not after Christ' (Colossians 2:8). The Apostle James taught that 'the friendship of the world is enmity with God[.] Whosoever therefore will be a friend of the world is the enemy of God' (James 4:4)."

Eldred G. Smith, Peace, General Conference April 1972
“Is this not the ultimate of service? To become as God is, then, we must eliminate enmity, greed, and selfishness, and all our efforts must be in service to others. The Lord said: “… he who doeth the works of righteousness shall receive his reward, even peace in this world, and eternal life in the world to come.” (D&C 59:23.)”
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“When the Savior comes again—and he will come—he will bring peace only as we will accept and follow his teachings of service to others and eliminate enmity and unrighteousness.”