'Proof' in the Bible

Abram believed the Lord, and the Lord considered his response of faith as proof of genuine loyalty.

He replied, "You must take these seven ewe lambs from my hand as legal proof that I dug this well."

So now, come, let's make a formal agreement, you and I, and it will be proof that we have made peace."

Gideon said to him, "If you really are pleased with me, then give me a sign as proof that it is really you speaking with me.

Gideon said to God, "If you really intend to use me to deliver Israel, as you promised, then give me a sign as proof.