John 1:17

Because the law was given by Moses; grace and truth came through Jesus Christ.

Romans 5:20-21

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

Romans 15:8-9

For I say that Christ has been made minister of circumcision for the truth of God, that he might confirm the promises of the fathers,

Ephesians 1:7

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

Ephesians 2:4-7

but God, being rich in mercy, on account of his great love with which he loved 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
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,
Ephesians 2:4
but God, being rich in mercy, on account of his great love with which he loved us,