'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 seeing we have this ministry, as we have received mercy, we faint not;

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.