Things about confessed sins.

Removed as far as the east is from the west.

Psalms 103:12

As far as the east is from the west, so far hath he removed our transgressions from us.

Cast into the depths of the sea.

Micah 7:19

 He will turn again, he will have compassion upon us; he will subdue our iniquities; and thou wilt cast all their sins into the depths of the sea.

One is saved from them.

Matthew 1:21

  And she shall bring forth a son, and thou shalt call his name JESUS: for he shall save his people from their sins.

Cleansed from them.

1 John 1:7 

But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.

1 John 1:9

 If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.