Joshua 6:8

And let seven priests having seven sacred trumpets proceed thus before the Lord, and let them sound loudly; and let the ark of the covenant of the Lord follow.

And it came to pass, when Joshua had spoken unto the people, that the seven priests bearing the seven trumpets of rams’ horns passed on before the Lord, and blew with the trumpets: and the ark of the covenant of the Lord followed them.

It was so, that when Joshua had spoken to the people, the seven priests bearing the seven trumpets of rams’ horns before Yahweh advanced and blew the trumpets, and the ark of Yahweh’s covenant followed them.