John 1:17

For the Law was given through Moses; grace and truth came through Jesus Christ.

Romans 5:20-21

Now Law was brought in later on, so that transgression might increase. But where sin increased, grace has overflowed;

Romans 15:8-9

My meaning is that Christ has become a servant to the people of Israel in vindication of God's truthfulness-- in showing how sure are the promises made to our forefathers--

Ephesians 1:7

It is in Him, and through the shedding of His blood, that we have our deliverance--the forgiveness of our offences--so abundant was God's grace,

Ephesians 2:4-7

But God, being rich in mercy, because of the intense love which He bestowed on us,

Treasury of Scripture Knowledge

Summary

But thou, O Lord, art a God full of compassion, and gracious, longsuffering, and plenteous in mercy and truth.

Bible References

But thou

Romans 5:20
Now Law was brought in later on, so that transgression might increase. But where sin increased, grace has overflowed;
Ephesians 1:7
It is in Him, and through the shedding of His blood, that we have our deliverance--the forgiveness of our offences--so abundant was God's grace,
Ephesians 2:4
But God, being rich in mercy, because of the intense love which He bestowed on us,