Deuteronomy 16:6

Which was instituted to put them in remembrance of their deliverance out of Egypt: and to continue them in the hope of Jesus Christ, of whom this lamb was a figure.

Geneva Bible (1599) marginal notes — public domain. Text via Bolls.life.

at the season--that is, the month and day, though not perhaps the precise hour. The immense number of victims that had to be immolated on the eve of the passover--that is, within a space of four hours--has appeared to some writers a great difficulty. But the large number of officiating priests, their dexterity and skill in the preparation of the sacrifices, the wide range of the court, the extraordinary dimensions of the altar of burnt offering and orderly method of conducting the solemn ceremonial, rendered it easy to do that in a few hours, which would otherwise have required as many days.

Jamieson, Fausset & Brown — Commentary Critical and Explanatory on the Whole Bible (1871) — public domain (CC PDM 1.0). Text via the HelloAO Bible API.

But at the place which the Lord thy God shall choose to place his name in,.... To place the ark and the mercy seat with the cherubim over them, where he caused his Shechinah, or divine Majesty, to dwell; and this was at Jerusalem, where the temple was built by Solomon:

there thou shalt sacrifice the passover; kill and eat the paschal lamb:

at even, at the going down of the sun; between the two evenings it was killed, before the sun was set, and afterwards at night it was eaten; the Targum of Jonathan is,"and at evening, at the setting of the sun, ye shall eat it until the middle of the night:"

at the season that thou camest forth out of Egypt; or as the same Targum,"the time of the beginning of your redemption out of Egypt;''which was when Pharaoh rose at midnight, and gave them leave to go; from thence their redemption commenced, though they did not actually set out until the morning.

John Gill's Exposition of the Whole Bible (1746–1763) — public domain (CC PDM 1.0). Text via the HelloAO Bible API.

Phase, or paschal lamb, which was to be sacrificed between the two evenings, during the space of about four hours, in the court before the ark. Some think that this precept was binding only in times of peace; and that when the people could not assemble in the place appointed, they might sacrifice the lamb elsewhere, which seems very probable, though no positive proof can be adduced. In the reign of Amon, when the priests could not perform their sacred functions in the temple, they removed the ark to another place: but Josias caused it to be brought back, 2 Paralipomenon xxxv. 3. (Calmet) --- As the Jews have now no temple, they cannot sacrifice the paschal lamb. (Tirinus) --- The priests were very expert, and observed an admirable order in offering such a surprising multitude of victims, (Calmet) as would be offered by every family of ten people. (Haydock) --- The blood, and perhaps the fat also, was presented on the altar of holocausts, which was very large, and the court exceedingly spacious. (Calmet) --- Which. This may not signify the precise hour, but may refer to all the time while the Hebrews were preparing for and commencing their journey. (Menochius) Ver. 1. --- Hebrew, "at the (return of the) season in which," &c.

George Leo Haydock (1774–1849), Haydock's Catholic Family Bible and Commentary, 1859 edition — public domain. Excludes Psalms (Douay-Rheims chapter numbering differs from Protestant) and Deuterocanonical books (Catholic canon only).

There thou shalt sacrifice the passover, to wit, in the court of the tabernacle or temple. This he prescribed, partly, that this great work might be done with more solemnity and care, in such manner as God required; partly, because it was not only a sacrament, but also a sacrifice, as appears because it is so called, Exo 12:27; 23:18; 34:25; Num 9:7, and because here was the sprinkling of blood, which is the essential part and character of a sacrifice; and partly, to design the place where Christ, the true Passover or Lamb of God, was to be slain.

At the season; understand this with some latitude, as such phrases are commonly taken, about that season, when you had received command from me to go out of Egypt, and were preparing yourselves for the journey.

Matthew Poole's English Annotations on the Holy Bible (1683–1685) — public domain. Text from a community e-Sword/MySword module.

There - Namely, in the court of the tabernacle or temple. This he prescribed, partly that this great work might be done with more solemnity in such manner as God required; partly, because it was not only a sacrament, but also a sacrifice, and because here was the sprinkling of blood, which is the essential part of a sacrifice; and partly to design the place where Christ, the true passover or lamb of God, was to be slain. At the season - About the time you were preparing yourselves for it.

John Wesley, Explanatory Notes Upon the Whole Bible (1754–1765) — public domain. Text via the GEBible commentary corpus.

בערב כבוא השמש מועד צאתך ממצרים [THERE THOU SHALT SACRIFICE THE PASSOVER] AT EVEN, AT THE GOING DOWN OF THE SUN, AT THE APPOINTED TIME THAT THOU CAME FORTH OUT OF EGYPT — But these are three different points of time! The explanation is: at evening, i.e. from the sixth hour (reckoning from six o’clock in the morning) and onwards you shall slaughter it (תזבח בערב); and when the sun goes down you shall eat it, and at the time when you left Egypt (in the early morning) you shall burn it — that is to say, if in the morning there is any flesh left, it becomes what is technically termed נותר and must be removed to the “place of burning” (not actually burnt, for this is not permissible on a festival) (Sifrei Devarim 133:1; cf. Berakhot 9a).

Rashi on the Tanakh — English translations: “The Judaica Press complete Tanach with Rashi, translated by A. J. Rosenberg” (CC BY 4.0); “Pentateuch with Rashi's commentary by M. Rosenbaum and A.M. Silbermann, 1929-1934” (public domain); “The Metsudah Tanach series, Lakewood, N.J” (CC BY 4.0); and “The Book of Joshua, Metsudah Publications, 1997” (CC BY 4.0). Text via Sefaria.