'Mercy' in the Bible

Blessed [gratefully praised and adored] be the God and Father of our Lord Jesus Christ, the Father of mercies and the God of all comfort,

Therefore, since we have this ministry, just as we received mercy [from God, granting us salvation, opportunities, and blessings], we do not get discouraged nor lose our motivation.

and they also long for you while they pray on your behalf, because of the surpassing measure of God’s grace [His undeserved favor, mercy, and blessing which is revealed] in you.

but He has said to me, “My grace is sufficient for you [My lovingkindness and My mercy are more than enough—always available—regardless of the situation]; for [My] power is being perfected [and is completed and shows itself most effectively] in [your] weakness.” Therefore, I will all the more gladly boast in my weaknesses, so that the power of Christ [may completely enfold me and] may dwell in me.