Genesis 15:8

And he said, O lord LORD, how shall I know that I shall inherit it?

And Zacharias said to the agent, How will I know this? For I am aged, and my wife is advanced in her days.

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

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

Show me a sign for good, that those who hate me may see it, and be put to shame, because thou, LORD, have helped me, and comforted me.

Ask thee a sign of LORD thy God, ask it either in the depth, or in the height above.

And Abraham said to his servant, the elder of his house, who ruled over all that he had, Put thy hand, I pray thee, under my thigh.

Behold, I am standing by the fountain of water. And the daughters of the men of the city are coming out to draw water.

And he said to him, If now I have found favor in thy sight, then show me a sign that it is thou who talk with me.

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

And Mary said to the agent, How will this be, since I know not a man?

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