Gideon made a sacred ephod from the gold and put it in Ophrah; it became a trap for Gideon and his family - Judges 8:27
Sometimes our best-intended actions have negative consequences
Gideon had just led Israel in a rousing victory over Midian and they elected him ruler
He said thanks, but no thanks - he knew not to take an office that had not appointed him to
Gideon asked everyone to gather up the gold colleced from the Midianite enemies so that he could make an ephod to server as a memorial to God's goodness for defeat the Midianites
Instead of remembering God, the Israelites began to worship it instead
Gideon provided leadership during the time of war but failed to offer it at a time when the people needed spiritual guidance
When you set out to do something you see as important, seek God and his approval before moving forward