Genesis 24:2-4, 13, 14
So Abraham instructed the chief servant of his household, who managed all he owned, "Place your hand under my thigh, . . .

Judges 6:17-24, 36-40
Gideon answered, "If I have found favor in Your sight, give me a sign that it is You speaking with me. . . .

1 Samuel 14:9, 10
If they say, 'Wait until we come to you, ' then we will stay where we are and not go up to them. . . .

2 Kings 20:8
Now Hezekiah had asked Isaiah, "What is the sign that the LORD will heal me and that I will go up to the house of the LORD on the third day?"

Psalm 86:17
Show me a sign of Your goodness, that my enemies may see and be ashamed, for You, O LORD, have helped me and comforted me.

Isaiah 7:11
"Ask for a sign from the LORD your God, whether from the depths of Sheol or the heights of heaven."

Luke 1:18, 34
"How can I be sure of this?" Zechariah asked the angel. "I am an old man, and my wife is well along in years." . . .