Judges 6:26-27

26and build an altar to the Lord your God on top of this mountain stronghold [with stones laid down] in an orderly way. Then take the second bull and offer a burnt sacrifice using the wood of the Asherah which you shall cut down.”

27Then Gideon took ten men of his servants and did just as the Lord had told him; but because he was too afraid of his father’s household (relatives) and the men of the city to do it during daylight, he did it at night.