'Need' in the Bible

And when Jesus heard it, he saith unto them, They that are whole have no need of a physician, but they that are sick: I came not to call the righteous, but sinners.

And he said unto them, Did ye never read what David did, when he had need, and was hungry, he, and they that were with him?

And if any one say unto you, Why do ye this? say ye, The Lord hath need of him; and straightway he will send him back hither.

And the high priest rent his clothes, and saith, What further need have we of witnesses?