John Gill Commentary Deuteronomy 12:18

"but thou shalt eat them before Jehovah thy God in the place which Jehovah thy God shall choose, thou, and thy son, and thy daughter, and thy man-servant, and thy maid-servant, and the Levite that is within thy gates: and thou shalt rejoice before Jehovah thy God in all that thou puttest thy hand unto." — Deuteronomy 12:18 (ASV)

But you must eat them before the Lord your God, in the place
which the Lord your God shall choose
Which may be said to be eaten before him, being eaten in the place where his sanctuary stood, in which he dwelt:

you, and your son, and your daughter, and your manservant, and your
maidservant, and the Levite that is within your gates ;
who were all to come with him to this place; (See Gill on Deuteronomy 12:12)

and you shall rejoice before the Lord your God in all that you put
your hand unto ;
cheerfully make and keep this feast in the manner directed to, rejoicing with his family and his friends, with the Levites and with the poor, expressing his thankfulness to God for his blessing on his labour.