Romans 5:20-21

But the law came, that the transgression might abound; but where sin did abound, there did grace superabound:

Ephesians 1:7-8

in whom we have redemption through his blood, the remission of transgressions, according to the riches of his grace,

James 5:11

Behold, we pronounce them happy who have endured: you have heard the patience of Job, and have seen the end of the Lord, because the Lord is very merciful, and sympathetic.

Treasury of Scripture Knowledge

Summary

The LORD is merciful and gracious, slow to anger, and plenteous in mercy.

Bible References

Merciful

Romans 5:20
But the law came, that the transgression might abound; but where sin did abound, there did grace superabound:
Ephesians 1:7
in whom we have redemption through his blood, the remission of transgressions, according to the riches of his grace,