Numbers 10:15 (KJV)

Also in the day of your gladness, and in your solemn days, and in the beginnings of your months, ye shall blow with the trumpets over your burnt offerings, and over the sacrifices of your peace offerings; that they may be to you for a memorial before your God: I am the LORD your God.

And it came to pass on the twentieth day of the second month, in the second year, that the cloud was taken up from off the tabernacle of the testimony.

And the children of Israel took their journeys out of the wilderness of Sinai; and the cloud rested in the wilderness of Paran.

And they first took their journey according to the commandment of the LORD by the hand of Moses.

In the first place went the standard of the camp of the children of Judah according to their armies: and over his host was Nahshon the son of Amminadab.

And over the host of the tribe of the children of Zebulun was Eliab the son of Helon.

And the tabernacle was taken down; and the sons of Gershon and the sons of Merari set forward, bearing the tabernacle.

And the standard of the camp of Reuben set forward according to their armies: and over his host was Elizur the son of Shedeur.

And over the host of the tribe of the children of Simeon was Shelumiel the son of Zurishaddai.

And over the host of the tribe of the children of Gad was Eliasaph the son of Deuel.