'Sinned' in the Bible

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

And David said unto God, Is it not I that commanded the people to be numbered? even I it is that have sinned and done very wickedly; but these sheep, what have they done? let thy hand, I pray thee, O Jehovah my God, be against me, and against my father's house; but not against thy people, that they should be plagued.