"Fifty days from the offering of first fruits, came the Pentecost, called also the feast of harvest and the feast of weeks. As an expression of gratitude for the grain prepared as food, two loaves baked with leaven were presented before God. The Pentecost occupied but one day, which was devoted to religious service. PP 540.1"
"Even unto the morrow after the seventh sabbath shall ye number fifty days; and ye shall offer a new meat offering unto the Lord."
EGW directly refers to the timing of Pentecost as fifty days after the offering of first fruits, which aligns with Leviticus 23:16.
"Ye shall bring out of your habitations two wave loaves of two tenth deals: they shall be of fine flour; they shall be baken with leaven; they are the firstfruits unto the Lord."
EGW's description of the two loaves baked with leaven as an offering during Pentecost directly echoes Leviticus 23:17.
"In the seventh month came the Feast of Tabernacles, or of ingathering. This feast acknowledged God's bounty in the products of the orchard, the olive grove, and the vineyard. It was the crowning festal gathering of the year. The land had yielded its increase, the harvests had been gathered into the granaries, the fruits, the oil, and the wine had been stored, the first fruits had been reserved, and now the people came with their tributes of thanksgiving to God, who had thus richly blessed them. PP 540.2"
"Thou shalt observe the feast of tabernacles seven days, after that thou hast gathered in thy corn and thy wine:"
Both passages connect the Feast of Tabernacles with the ingathering of the harvest and expressions of gratitude for God's bounty.
"This feast was to be pre-eminently an occasion of rejoicing. It occurred just after the great Day of Atonement, when the assurance had been given that their iniquity should be remembered no more. At peace with God, they now came before Him to acknowledge His goodness and to praise Him for His mercy. The labors of the harvest being ended, and the toils of the new year not yet begun, the people were free from care, and could give themselves up to the sacred, joyous influences of the hour. Though only the fathers and sons were commanded to appear at the feasts, yet, so far as possible, all the household were to attend them, and to their hospitality the servants, the Levites, the stranger, and the poor were made welcome. PP 540.3"
"And thou shalt rejoice in thy feast, thou, and thy son, and thy daughter, and thy manservant, and thy maidservant, and the Levite, the stranger, and the fatherless, and the widow, that are within thy gates."
Both passages emphasize the rejoicing associated with the Feast of Tabernacles and the inclusion of various members of the community (family, servants, Levites, strangers) in the celebration.
"Like the Passover, the Feast of Tabernacles was commemorative. In memory of their pilgrim life in the wilderness the people were now to leave their houses and dwell in booths, or arbors, formed from the green branches “of goodly trees, branches of palm trees, and the boughs of thick trees, and willows of the brook.” Leviticus 23:40, 42, 43 . PP 540.4"
"That your generations may know that I made the children of Israel to dwell in booths, when I brought them out of the land of Egypt: I am the Lord your God."
EGW directly quotes Leviticus 23:43 and references Leviticus 23:40, 42, connecting the Feast of Tabernacles with the dwelling in booths as a remembrance of the Israelites' time in the wilderness.
"The first day was a holy convocation, and to the seven days of the feast an eighth day was added, which was observed in like manner. PP 540.5"
"Seven days ye shall offer an offering made by fire unto the Lord: on the eighth day shall be an holy convocation unto you; and ye shall offer an offering made by fire unto the Lord: it is a solemn assembly; and ye shall do no servile work therein."
EGW directly references the 'holy convocation' and 'eighth day' mentioned in Leviticus 23:36 in the context of a feast, making it a clear and direct allusion.
"At these yearly assemblies the hearts of old and young would be encouraged in the service of God, while the association of the people from the different quarters of the land would strengthen the ties that bound them to God and to one another. Well would it be for the people of God at the present time to have a Feast of Tabernacles—a joyous commemoration of the blessings of God to them. As the children of Israel celebrated the deliverance that God had wrought for their fathers, and His miraculous preservation of them during their journeyings from Egypt, so should we gratefully call to mind the various ways He has devised for bringing us out from the world, and from the darkness of error, into the precious light of His grace and truth. PP 540.6"
"Behold, how good and how pleasant it is for brethren to dwell together in unity!"
Both passages highlight the benefits of unity and fellowship among believers. EGW uses the Feast of Tabernacles as an example of how gatherings strengthen bonds, echoing the sentiment in Psalm 133:1.