Proverbs 28:13
"He that covereth his sins shall not prosper: but whoso confesseth and forsaketh them shall have mercy."
Cross References (ranked by relevance)
If I covered my transgressions as Adam, by hiding mine iniquity in my bosom:
Create in me a clean heart, O God; and renew a right spirit within me.
He looketh upon men, and if any say, I have sinned, and perverted that which was right, and it profited me not;
But shewed first unto them of Damascus, and at Jerusalem, and throughout all the coasts of Judaea, and then to the Gentiles, that they should repent and turn to God, and do works meet for repentance.
And the LORD said unto Cain, Where is Abel thy brother? And he said, I know not: Am I my brother’s keeper?
Then he said, I have sinned: yet honour me now, I pray thee, before the elders of my people, and before Israel, and turn again with me, that I may worship the LORD thy God.
He that covereth a transgression seeketh love; but he that repeateth a matter separateth very friends.
And Saul said unto Samuel, I have sinned: for I have transgressed the commandment of the LORD, and thy words: because I feared the people, and obeyed their voice.
Hatred stirreth up strifes: but love covereth all sins.
And Samuel came to Saul: and Saul said unto him, Blessed be thou of the LORD: I have performed the commandment of the LORD.