Albert Barnes Commentary Deuteronomy 12:7

"and there ye shall eat before Jehovah your God, and ye shall rejoice in all that ye put your hand unto, ye and your households, wherein Jehovah thy God hath blessed thee." — Deuteronomy 12:7 (ASV)

An injunction that the feasts which accompanied certain offerings (not specified) were to be also held in the same place.