Genesis 15:8

And he said, Lord God, by what shall I know that I shall inherit it?

And Zacharias said to the angel, By what shall I know this? For I am old, and my wife is advanced in her days.

And Gideon said to God, If You will save Israel by my hand, as You have said,

And Hezekiah said to Isaiah, What shall be the sign that Jehovah will heal me, and that I shall go up into the house of Jehovah the third day?

Show me a token for good, so that they who hate me may see and be ashamed; because You, Jehovah, have helped me and comforted me.

Ask a sign of Jehovah your God; ask it either in the depth, or in the height above.

And Abraham said to the oldest servant of his house, who ruled over all that he had, I pray you, put your hand under my thigh.

Behold, I stand by the well of water. And the daughters of the men of the city come out to draw water.

And he said to Him, If now I have found grace in Your sight, then show me a sign that You talk with me.

If they say this to us, Stand still until we come to you, then we will stand still in our place and will not go up to them.

Then Mary said to the angel, How shall this be, since I do not know a man?

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