'Sinned' in the Bible

At this point, David told Nathan, "I have sinned against the LORD."

because your servant knows that I have sinned, but today I have come here as the first one from the entire house of Joseph to meet your majesty the king."

Later, David's conscience bothered him after he had numbered the army, so David told the LORD, "I have sinned greatly by what I did. But now I am asking you, please remove the guilt of your servant, since I have acted very foolishly."

When David saw the angel who had been attacking the people, he told the LORD, "Look, I'm the one who has sinned! I did the evil. These are only sheep! What did they do? Please, let your hand fall on me and on my household!"