"The earlier part of the day was devoted to religious exercises, and the people spent the remainder of the time in gratefully recounting the blessings of God and in enjoying the bounties that He had provided. Portions were also sent to the poor, who had nothing to prepare. There was great rejoicing because the words of the law had been read and understood. PK 662.2"
"Then he said unto them, Go your way, eat the fat, and drink the sweet, and send portions unto them for whom nothing is prepared: for this day is holy unto our Lord: neither be ye sorry; for the joy of the Lord is your strength."
The EGW passage closely mirrors the events described in Nehemiah 8:10, including the focus on religious exercises, recounting God's blessings, sharing with the poor, and rejoicing in understanding the law. The parallel is strong and specific.