Who can say, I have made my heart clean, I am pure from my sin?

Psalms 51:5 Behold, I was shapen in iniquity; and in sin did my mother conceive me.

Proverbs 20:9 Who can say, I have made my heart clean, I am pure from my sin?

Ecclesiastes 7:20 For there is not a just man upon earth, that doeth good, and sinneth not.

1 John 1:7-10) 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.

Psalms 119:9 Wherewithal shall a young man cleanse his way? by taking heed thereto according to Thy word.

Psalms 119:11 Thy word have I hid in mine heart, that I might not sin against Thee.

Romans 3:23 For all have sinned, and come short of the Glory of God

Romans 6:23 For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.

Romans 10:9-13) 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.

Mark 1:15 And saying, The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the Gospel.

John 3:3 3 Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God.

John 3:5-8) 5 Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God.
6 That which is born of the flesh is flesh; and that which is born of the Spirit is spirit.
7 Marvel not that I said unto thee, Ye must be born again.
8 The wind bloweth where it listeth, and thou hearest the sound thereof, but canst not tell whence it cometh, and whither it goeth: so is every one that is born of the Spirit.

Matthew 7:13-14) 13 Enter ye in at the strait gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat:
14 Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it.

Proverbs 3:5-7) 5 Trust in the Lord with all thine heart; and lean not unto thine own understanding.6 In all thy ways acknowledge Him, and He shall direct thy paths.
7 Be not wise in thine own eyes: fear the Lord, and depart from evil.

Proverbs 16:6 By Mercy and Truth iniquity is purged: and by the fear of the Lord men depart from evil.

Proverbs 28:13 He that covereth his sins shall not prosper: but whoso confesseth and forsaketh them shall have mercy.