Leviticus 5:5 (KJV)
5 And it shall be, when he shall be guilty in one of these things, that he shall confess that he hath sinned in that thing:
Leviticus 26:40-42 (KJV)
40 If they shall confess their iniquity, and the iniquity of their fathers, with their trespass which they trespassed against me, and that also they have walked contrary unto me;
41 And that I also have walked contrary unto them, and have brought them into the land of their enemies; if then their uncircumcised hearts be humbled, and they then accept of the punishment of their iniquity:
42 Then will I remember my covenant with Jacob, and also my covenant with Isaac, and also my covenant with Abraham will I remember; and I will remember the land.
Psalm 32:1-5 (KJV)
1 Blessed is he whose transgression is forgiven, whose sin is covered.
2 Blessed is the man unto whom the Lord imputeth not iniquity, and in whose spirit there is no guile.
3 When I kept silence, my bones waxed old through my roaring all the day long.
4 For day and night thy hand was heavy upon me: my moisture is turned into the drought of summer. Selah.
5 I acknowledge my sin unto thee, and mine iniquity have I not hid. I said, I will confess my transgressions unto the Lord; and thou forgavest the iniquity of my sin. Selah.
Psalm 38:18 (KJV)
17 For I am ready to halt, and my sorrow is continually before me.
18 For I will declare mine iniquity; I will be sorry for my sin.
Proverbs 28:13 (KJV)
13 He that covereth his sins shall not prosper: but whoso confesseth and forsaketh them shall have mercy.
Daniel 9:3-10 (KJV)
3 And I set my face unto the Lord God, to seek by prayer and supplications, with fasting, and sackcloth, and ashes:
4 And I prayed unto the Lord my God, and made my confession, and said, O Lord, the great and dreadful God, keeping the covenant and mercy to them that love him, and to them that keep his commandments;
5 We have sinned, and have committed iniquity, and have done wickedly, and have rebelled, even by departing from thy precepts and from thy judgments:
6 Neither have we hearkened unto thy servants the prophets, which spake in thy name to our kings, our princes, and our fathers, and to all the people of the land.
7 O Lord, righteousness belongeth unto thee, but unto us confusion of faces, as at this day; to the men of Judah, and to the inhabitants of Jerusalem, and unto all Israel, that are near, and that are far off, through all the countries whither thou hast driven them, because of their trespass that they have trespassed against thee.
8 O Lord, to us belongeth confusion of face, to our kings, to our princes, and to our fathers, because we have sinned against thee.
9 To the Lord our God belong mercies and forgivenesses, though we have rebelled against him;
10 Neither have we obeyed the voice of the Lord our God, to walk in his laws, which he set before us by his servants the prophets.
Matthew 3:1-8 (KJV)
1 In those days came John the Baptist, preaching in the wilderness of Judaea,
2 And saying, Repent ye: for the kingdom of heaven is at hand.
3 For this is he that was spoken of by the prophet Esaias, saying, The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight.
4 And the same John had his raiment of camel’s hair, and a leathern girdle about his loins; and his meat was locusts and wild honey.
5 Then went out to him Jerusalem, and all Judaea, and all the region round about Jordan,
6 And were baptized of him in Jordan, confessing their sins.
7 But when he saw many of the Pharisees and Sadducees come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come?
8 Bring forth therefore fruits meet for repentance:
Romans 10:9-13 (KJV)
9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
10 For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
11 For the scripture saith, Whosoever believeth on him shall not be ashamed.
12 For there is no difference between the Jew and the Greek: for the same Lord over all is rich unto all that call upon him.
13 For whosoever shall call upon the name of the Lord shall be saved.
James 5:16 (KJV)
16 Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.
1 John 1:5-10 (KJV)
5 This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all.
6 If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth:
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.
8 If we say that we have no sin, we deceive ourselves, and the truth is not in us.
9 If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
10 If we say that we have not sinned, we make him a liar, and his word is not in us.