'Good will' in the Bible

The king of the Ammonites answered the messengers of Jephthah, "We're here because Israel took away my land from the Arnon River as far as the Jabbok River and as far as the Jordan River when they came up from Egypt! So restore it as a gesture of good will."

And they said to them, "Come, let us go up against them; for we have seen the land, and [it is] very good. Will you do nothing? Do not hesitate to go, to enter, to possess the land.