Numbers 10:9-10

⁹If ye shall go out of your land to battle against the enemies that fight against you, ye shall cry with trumps sounding, and the bethinking of you shall be before your Lord God, that ye be delivered from the hands of your enemies. (If ye shall go out of your land to do battle against the enemies who fight against you, ye shall cry with sounding trumpets, and then the remembrance of you shall be before the Lord your God, and ye shall be delivered from the hands of your enemies.)

¹⁰If any time ye shall have a feast, and holidays, and calends, that is, the first day of the month, ye shall sing in trumps upon the burnt sacrifices, and the peaceable sacrifices, that those be to you into remembering of your God; I am your Lord God. (And at the times that ye have feasts, and holidays, and calends, that is, the first day of the month, ye shall sing with trumpets over the burnt sacrifices, and the peace offerings, so that they bring forth a remembrance of you before your God; I am the Lord your God.)