Exodus 4:14
Book: Exodus 4
And the anger of Jehovah was kindled against Moses, and he said, Is there not Aaron thy brother the Levite? I know that he can speak well. And also, behold, he cometh forth to meet thee: and when he seeth thee, he will be glad in his heart.
Joshua 6:4
Book: Joshua 6
And seven priests shall bear seven trumpets of rams' horns before the ark: and the seventh day ye shall compass the city seven times, and the priests shall blow the trumpets.