2 Corinthians 7:9
"Now I rejoice, not that ye were made sorry, but that ye sorrowed to repentance: for ye were made sorry after a godly manner, that ye might receive damage by us in nothing."
Cross References (ranked by relevance)
I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance.
For I will declare mine iniquity; I will be sorry for my sin.
Sorrow is better than laughter: for by the sadness of the countenance the heart is made better.
Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ.
And I will pour upon the house of David, and upon the inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon me whom they have pierced, and they shall mourn for him, as one mourneth for his only son, and shall be in bitterness for him, as one that is in bitterness for his firstborn.
Likewise, I say unto you, there is joy in the presence of the angels of God over one sinner that repenteth.
For our rejoicing is this, the testimony of our conscience, that in simplicity and godly sincerity, not with fleshly wisdom, but by the grace of God, we have had our conversation in the world, and more abundantly to you-ward.
It was meet that we should make merry, and be glad: for this thy brother was dead, and is alive again; and was lost, and is found.
To the one we are the savour of death unto death; and to the other the savour of life unto life. And who is sufficient for these things?