Psalm 51:2

Wash away all my iniquity and cleanse me from my sin. 

Wash away all my iniquity 
Ruth 3:3  "Wash, put on perfume, and get dressed in your best clothes. Then go down to the threshing floor, but don't let him know you are there until he has finished eating and drinking."
Jeremiah 2:22  "Although you wash yourself with soap and use an abundance of cleansing powder, the stain of your guilt is still before me," declares the Sovereign LORD.
Jeremiah 13:27  "... your adulteries and your lustful neighings, your shameless prostitution! I have seen your detestable acts on the hills and in the fields. Woe to you, Jerusalem! How long will you be unclean?"
Acts 22:16  " 'And now what are you waiting for? Get up, be baptized and wash your sins away, calling on his name.' " 
1 John 1:9  If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness. 

and cleanse me from my sin 
Proverbs 20:30  Blows and wounds scrub away evil, and beatings purge the inmost being.
Isaiah 4:4  The LORD will wash away the filth of the women of Zion; he will cleanse the bloodstains from Jerusalem by a spirit of judgment and a spirit of fire.  
Ezekiel 36:25  " 'I will sprinkle clean water on you, and you will be clean; I will cleanse you from all your impurities and from all your idols.' "
Zechariah 13:1  "On that day a fountain will be opened to the house of David and the inhabitants of Jerusalem, to cleanse them from sin and impurity." 
Matthew 23:25-26  "Woe to you, teachers of the law and Pharisees, you hypocrites! You clean the outside of the cup and the dish, but inside they are full of greed and self-indulgence. Blind Pharisee! First clean the inside of the cup and dish, and then the outside also will be clean." 
Hebrews 9:14  How much more, then, will the blood of Christ, who through the eternal Spirit offered himself unblemished to God, cleanse our consciences from acts that lead to death, so that we may serve the living God! 

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. Limited to 15 verses per post.