Genesis 15:8

Treasury of Scripture Knowledge

And he said, Lord GOD, whereby shall I know that I shall inherit it?

Abraham said to his servant, the oldest of his household, who had charge of all that he owned, “Please place your hand under my thigh,

So Gideon said to Him, “If now I have found favor in Your sight, then show me a sign that it is You who speak with me.

If they say to us, ‘Wait until we come to you’; then we will stand in our place and not go up to them.

Now Hezekiah said to Isaiah, “What will be the sign that the Lord will heal me, and that I shall go up to the house of the Lord the third day?”

Show me a sign for good,

That those who hate me may see it and be ashamed,
Because You, O Lord, have helped me and comforted me.

“Ask a sign for yourself from the Lord your God; make it deep as Sheol or high as heaven.”

Zacharias said to the angel, “How will I know this for certain? For I am an old man and my wife is advanced in years.”