Gideon answered, "If I have found favor in Your sight, give me a sign that it is You speaking with me.

Judges 6:18
Please do not depart from this place until I return to You. Let me bring my offering and set it before You." And the LORD said, "I will stay until you return."

Judges 6:37
then behold, I will place a fleece of wool on the threshing floor. If there is dew only on the fleece and all the ground is dry, then I will know that You are going to save Israel by my hand, as You have said."

1 Kings 13:3
That day the man of God gave a sign, saying, "The LORD has spoken this sign: 'Surely the altar will be split apart, and the ashes upon it will be poured out.'"

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 38:7
This will be a sign to you from the LORD that He will do what He has promised:

Isaiah 38:8
I will make the sun's shadow that falls on the stairway of Ahaz go back ten steps.'" So the sunlight went back the ten steps it had descended.

And he said to him, If now I have found grace in your sight, then show me a sign that you talk with me.