23 And the Lord spoke to Moses, saying, 24 "Speak to the people of Israel, saying, In the seventh month, on the first day of the month, you shall observe a day of solemn rest, a memorial proclaimed with blast of trumpets, a holy convocation. 25 You shall not do any ordinary work, and you shall present a food offering to the Lord." 26 And the Lord spoke to Moses, saying, 27 "Now on the tenth day of this seventh month is the Day of Atonement. It shall be for you a time of holy convocation, and you shall afflict yourselves and present a food offering to the Lord. 28 And you shall not do any work on that very day, for it is a Day of Atonement, to make atonement for you before the Lord your God. 29 For whoever is not afflicted on that very day shall be cut off from his people. 30 And whoever does any work on that very day, that person I will destroy from among his people. 31 You shall not do any work. It is a statute forever throughout your generations in all your dwelling places. 32 It shall be to you a Sabbath of solemn rest, and you shall afflict yourselves. On the ninth day of the month beginning at evening, from evening to evening shall you keep your Sabbath."

Matthew Henry's Commentary on Leviticus 23:23-32

Commentary on Leviticus 23:23-32

(Read Leviticus 23:23-32)

the blowing of trumpets represented the preaching of the gospel, by which men are called to repent of sin, and to accept the salvation of Christ, which was signified by the day of atonement. Also it invited to rejoice in God, and become strangers and pilgrims on earth, which was denoted by the feast of Tabernacles, observed in the same month. At the beginning of the year, they were called by this sound of trumpet to shake off spiritual drowsiness, to search and try their ways, and to amend them. The day of atonement was the ninth day after this; thus they were awakened to prepare for that day, by sincere and serious repentance, that it might indeed be to them a day of atonement. The humbling of our souls for sin, and the making our peace with God, is work that requires the whole man, and the closest application of mind. On that day God spake peace to his people, and to his saints; therefore they must lay aside all their wordly business, that they might the more clearly hear that voice of joy and gladness.