Leviticus 23:5

“In the fourteenth [day] of the first month, etc.] The month Nisan, the same with Abib, the month in which the children of Israel came out of Egypt, for which reason it was made the first month in the year, answering to part of our March and part of April; and for the same reason was the passover kept at this time, as follows: at even [is] the Lord’s passover; that is, that was the time for the keeping the passover, even “between the two evenings”, as it may be rendered; from the sixth hour and onward, as Jarchi, trial is, after noon or twelve o’clock the middle of the day, as Gersom, when the sun began to decline; (see Gill on “<021206>Exodus 12:6”).”

“THE PASSOVER. (Lev 23:5-8) the Lord's passover--(See Exo 12:2, Exo 12:14, Exo 12:18). The institution of the passover was intended to be a perpetual memorial of the circumstances attending the redemption of the Israelites, while it had a typical reference to a greater redemption to be effected for God's spiritual people. On the first and last days of this feast, the people were forbidden to work [Lev 23:7-8]; but while on the Sabbath they were not to do any work, on feast days they were permitted to dress meat--and hence the prohibition is restricted to "no servile work." At the same time, those two days were devoted to "holy convocation"--special seasons of social devotion. In addition to…”

“In these verses, the Passover, or Paschal Supper, and the Feast of Unleavened Bread, are plainly spoken of as distinct feasts. See Exodus 12:6, Exodus 12:15, Exodus 12:17; Numbers 28:16-17. Leviticus 23:5 See Exodus 12:6. According to the Hebrew mode of reckoning, the 15th day of the month began on the evening of the 14th. The day of holy convocation with which the Feast of Unleavened Bread commenced Leviticus 23:7 was the 15th, and that with which it terminated was the 21st. Compare Numbers 28:16-17. Leviticus 23:6 Feast - The three festivals (often called the Great Festivals), Passover, Pentecost and tabernacles, to which the name חג chag, i. e. a feast or rejoicing properly belongs…”

“23:5-8 Passover . . . Unleavened Bread: These feasts were instituted on the eve of the exodus from Egypt (see Exod 12:1-28). Passover was the first of three great festivals (Deut 16:16), followed by the Festival of Harvest (Lev 23:15-21) and the Festival of Shelters (23:34-43). 23:5 Passover began at sundown on the fourteenth day of the first month, as the new day was beginning (see study note on 11:24-25). The Passover feast included a roast lamb, bitter salad greens, and bread made without yeast (Exod 12:8), all representing Israel’s liberation from Egyptian bondage. • The first month marked the beginning of the Jewish calendar as late as Ezra 6:19. The month’s earliest name, Abib…”

“Exo 12:2-14, Exo 12:18, Exo 13:3-10, Exo 23:15; Num 9:2-7, Num 28:16; Deu 16:1-8; Jos 5:10; Ch2 35:18, Ch2 35:19; Mat 26:17; Mar 14:12; Luk 22:7; Co1 5:7, Co1 5:8 Leviticus 23:6”