Deuteronomy 16:11

and thou shalt rejoice before the lord, thy god, Deuteronomy 12:7 to Deuteronomy 12:18, thou, and thy son, and thy daughter, and thy man-servant, and thy maidservant, and the Levite that is within thy gates, and the stranger, and the fatherless, and the widow that are among you, in the place which the Lord, thy God, hath chosen to place His name there. though only a one-day festival, Pentecost was celebrated with great joy, and the needs of the poor and forsaken were particularly stressed.