John Gill 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)

And there you shall eat before the Lord your God
The priests and the Levites, what was their portion, so Aben Ezra; but the people also are included, and by what follows seem chiefly designed, who were to eat their part of the sacrifices, particularly of the tithes and peace offerings, in the holy place that should be chosen and appointed; see (Deuteronomy 14:22Deuteronomy 14:23Deuteronomy 14:27)

and you shall rejoice in all that you put your hand unto ;
in all the labours of their hands, and what they got thereby, which they were cheerfully to enjoy, and express their thankfulness for it in this way; see (Ecclesiastes 5:18Ecclesiastes 5:19)

you and your households ;
their wives, sons, daughters, men and maid servants; yea, with them Levites, strangers, fatherless, and widows, were to partake of some of their freewill offerings, (Deuteronomy 16:10Deuteronomy 16:11)

wherein the Lord your God has blessed you ;
and these offerings were eucharistical, and by way of thanksgiving for the blessing of God upon their labours, for it is that which makes rich, (Proverbs 10:22) .