Romans 5:20-21

Now the law of Moses was introduced [into the world] in order to cause sin to increase [i.e., it defined many things to be wrong that were previously not regarded as sin]. But with the increase of sin, God's unearned favor increased all the more.

Ephesians 1:6

so that we would praise His glorious, unearned favor, which was freely given to us through the One whom God loved [i.e., Christ].

Ephesians 1:8

which He lavished on us. [He used] wisdom and understanding,

Ephesians 2:4

But God, who has great love for us and abundant mercy [toward us],

Treasury of Scripture Knowledge

Summary

The LORD is gracious, and full of compassion; slow to anger, and of great mercy.

Bible References

Lord is gracious

Romans 5:20
Now the law of Moses was introduced [into the world] in order to cause sin to increase [i.e., it defined many things to be wrong that were previously not regarded as sin]. But with the increase of sin, God's unearned favor increased all the more.
Ephesians 1:6
so that we would praise His glorious, unearned favor, which was freely given to us through the One whom God loved [i.e., Christ].
Ephesians 2:4
But God, who has great love for us and abundant mercy [toward us],