1 Samuel 14:10
But if they say, 'Come up to us,' then we will go up, for Yahweh has given them into our hand, and this [will be] the sign for us."
Genesis 24:14
And let it be [that] the girl to whom I shall say, 'Please, offer your jar that I may drink' and [who] says, 'Drink--and I will also water your camels,' she [is the one] you have chosen for your servant, for Isaac. By her I will know that you have shown loyal love to my master."
Judges 6:36
Then Gideon said to God, "In order to see that you will deliver Israel by my hand, just as you have said,
Judges 7:11
and you will hear what they say; and afterward {you will have courage}, and you will go down against the camp." Then he went down with Purah his servant to the outpost of the armed men that [were] in the camp.
1 Samuel 10:7
When these signs come to you, do for yourself what your hand finds [to do], for God [will be] with you.
Isaiah 7:11-14
"Ask for a sign for yourself from Yahweh God; make [it] deep [as] Sheol or make [it] high as above."