Judges 6:27
Then Gideon took ten men of his servants, and did as the LORD had said unto him: and so it was, because he feared his father’s household, and the men of the city, that he could not do it by day, that he did it by night. Then Gideon took ten men of his servants, and did as the LORD had said unto him: and so it was, because he feared his father’s household, and the men of the city, that he could not do it by day, that he did it by night.
The verse belongs to the raising up of Gideon to oppose idolatry and to deliver Israel from its enemies. It comes after seven years of oppression by Midian together with the Amalekites. Those wild desert people came in locust-like multitude with flocks and herds from Jordan to the Philistine plain, stripping the harvests as soon as they ripened until the last fruits were gathered, robbing and maltreating the inhabitants and driving those in the open country into walled towns, fortresses, caves and rocky fastnesses. When the people gave heed to the Lord's reproof and confessed their sins, God again raised up a helper for them.
In that setting Gideon obeyed God's command to destroy Baal's altar, his father's altar to Baal with the Asherah beside it, and to establish an altar to Jehovah. He did what the Lord had told him, taking ten men of his servants to help him do the work. Because he feared his father's household and the men of the city would oppose and stop him if he acted by day, he could not do it by day and did it by night. That destruction and rebuilding was a public protest against idolatry that had to come before Israel's battle with its enemies.