'Sinned' in the Bible

And David said to God, I have sinned greatly, in that I have done this thing; and now, I beseech thee, put away the iniquity of thy servant; for I have done very foolishly.

And David said to God, Is it not I that commanded the people to be numbered? It is I that have sinned and done evil; but these sheep, what have they done? Let thy hand, I pray thee, Jehovah my God, be on me and on my father's house; but not on thy people, that they should be smitten.