Sin Is Against God

After a while his master's wife took notice of Joseph and said, "Come to bed with me!" But he refused. "With me in charge," he told her, "my master does not concern himself with anything in the house; everything he owns he has entrusted to my care. No one is greater in this house than I am My master has withheld nothing from me except you, because you are his wife. How then could I do such a wicked thing and sin against God?" 


Genesis 39:7-9 NIV 




When confronted with his sin of murder and adultery - 


David said unto Nathan, I have sinned against the LORD. And Nathan said unto David, The LORD also hath put away thy sin; thou shalt not die. 


2 Samuel 12:13 KJV 




How blessed is he whose transgression is forgiven, 
Whose sin is covered! I acknowledged my sin to You, 
And my iniquity I did not hide; 


I said, "I will confess my transgressions to the LORD"; 
And You forgave the guilt of my sin. 


Psalm 32:1,5 NASB