45:18-20 On the first new year's day of each year the people should offer a young bull without blemish to cleanse the accumulated sinful defilement of the sanctuary. The priest in charge was to apply some of the blood of a sin offering to the door frames of the temple proper, the four corners of the altar of sacrifice, and the door frames of the inner court of the temple. Another offering was to occur on the seventh day of the new year, and it would cover the guilt of sins committed ignorantly. It too would result in the cleansing of the temple for another year.
45:21-24 On the fourteenth day of the first month of the year the Israelites were to celebrate the Passover and then a seven-day feast using unleavened bread (cf. Exod. 12:1-14; Lev. 23:5-8; Num. 28:16-25).564On the day of the Passover the prince would offer a bull as a sin offering for himself and the people. During the seven days of this Passover festival the prince would also offer each day seven bulls and seven rams without blemish as a burnt offering of worship and one ram for a sin offering. He would offer with each bull and each ram one ephah (about one-half bushel) of grain as a grain offering plus a hin (about one gallon) of oil with the grain. This celebration will doubtless commemorate Jesus Christ's sacrificial death as the Lamb of God who takes away the sins of the world and the importance of living sin-free in view of that sacrifice.
45:25 On the fifteenth day of the seventh month, at the feast on that day, the prince would repeat the cycle of offerings he made during the Passover. This feast corresponds to the seven-day feast of Tabernacles under the Mosaic system (cf. Lev. 23:39-43; Num. 29:12-38). In the Millennium it will undoubtedly be a celebration of God's faithfulness in bringing the Israelites securely and permanently into the Promised Land, which the feast of Tabernacles anticipated.
Other feasts of Israel in the past receive no mention in Ezekiel's revelation concerning future worship: Firstfruits, Pentecost (Harvest, Weeks), Trumpets, and day of Atonement. Probably they will be absent in the future millennial system of worship. Some scholars believe that by describing only two of the feasts (Passover/Unleavened Bread and Tabernacles) Ezekiel was using a figure of speech (merism) and meant the reader to understand all the others. It is, of course, a dangerous interpretive practice to assume that the writer intended something that he did not state, especially when so much detail characterizes this portion of Ezekiel.