He said to him, If now I have found favor in your sight, then show me a sign that it is you who talk with me.
So, there came an angel of the LORD, and sat under an oak tree which is at Ophrah, that pertained to Joash the Abiezrite: [and the son] and his son Gideon threshed wheat by the winepress, to hide it from the Midianites ( Judges 6:11 ).