Judges 6:37

34 But the spirit of the Lord came on Gideon; and at the sound of his horn all Abiezer came together after him.

35 And he sent through all Manasseh, and they came after him; and he sent to Asher and Zebulun and Naphtali, and they came up and were joined to the others.

36 Then Gideon said to God, If you are going to give Israel salvation by my hand, as you have said,

37 See, I will put the wool of a sheep on the grain-floor; if there is dew on the wool only, while all the earth is dry, then I will be certain that it is your purpose to give Israel salvation by my hand as you have said.

38 And it was so: for he got up early on the morning after, and twisting the wool in his hands, he got a basin full of water from the dew on the wool.

39 Then Gideon said to God, Do not be moved to wrath against me if I say only this: let me make one more test with the wool; let the wool now be dry, while the earth is covered with dew.

40 And that night God did so; for the wool was dry, and there was dew on all the earth round it.