'Sinning' in the Bible

And God said to him in the dream, I see that you have done this with an upright heart, and I have kept you from sinning against me: for this reason I did not let you come near her.

So that no one has more authority in this house than I have; he has kept nothing back from me but you, because you are his wife; how then may I do this great wrong, sinning against God?