Genesis 15:8
And he said, Lord GOD, how shall I know that I shall inherit it?
Luke 1:18
And Zachariah said unto the angel, How shall I know this? for I am an old man, and my wife well advanced in years.
Judges 6:36-40
And Gideon said unto God, If you will save Israel by my hand, as you have said,
2 Kings 20:8
And Hezekiah had said unto Isaiah, What shall be the sign that the LORD will heal me, and that I shall go up into the house of the LORD the third day?
Psalm 86:17
Show me a sign for good; that they who hate me may see it, and be ashamed: because you, LORD, have helped me, and comforted me.
Isaiah 7:11
Ask a sign of the LORD your God; ask it either in the depth, or in the height above.
Genesis 24:2-4
And Abraham said unto his eldest servant of his house, that ruled over all that he had, Put, I pray you, your hand under my thigh:
Genesis 24:13-14
Behold, I stand here by the well of water; and the daughters of the men of the city come out to draw water:
Judges 6:17-24
And he said unto him, If now I have found grace in your sight, then show me a sign that you talk with me.
1 Samuel 14:9-10
If they say thus unto us, Tarry until we come to you; then we will stand still in our place, and will not go up unto them.
Luke 1:34
Then said Mary unto the angel, How shall this be, seeing I know not a man?