Deuteronomy 16
11 Ref and you shall rejoice before Yahweh your God, you, and your son, and your daughter, and your man-servant, and your maid-servant, and the Levite who is within your gates, and the foreigner, and the fatherless, and the widow, who are in the midst of you, in the place which Yahweh your God shall choose, to cause his name to dwell there.
12 Ref You shall remember that you were a bondservant in Egypt: and you shall observe and do these statutes.