Judges 6:17

6:17 Gideon said to him, “If you really are pleased with me, then give me a sign as proof that it is really you speaking with me.

Judges 6:37-40

6:37 Look, I am putting a wool fleece on the threshing floor. If there is dew only on the fleece, and the ground around it is dry, then I will be sure that you will use me to deliver Israel, as you promised.” 6:38 The Lord did as he asked. When he got up the next morning, he squeezed the fleece, and enough dew dripped from it to fill a bowl. 6:39 Gideon said to God, “Please do not get angry at me, when I ask for just one more sign. Please allow me one more test with the fleece. This time make only the fleece dry, while the ground around it is covered with dew.” 6:40 That night God did as he asked. Only the fleece was dry and the ground around it was covered with dew.