And the LORD spake unto Moses in the wilderness of Sinai, in the first month of the second year after they were come out of the land of Egypt, saying,
In the first month — And therefore before the numbering of the people, which was not till the second month, Numbers 1:1,2. But it is placed after it, because of a special case relating to the passover, which happened after it, upon occasion whereof he mentions the command of God for keeping the passover in the wilderness, which was done but once, and without this command they had not been obliged to keep it at all, till they came to the land of Canaan.
 And there were certain men, who were defiled by the dead body of a man, that they could not keep the passover on that day: and they came before Moses and before Aaron on that day:
They came — For resolution of their difficulty.
 And those men said unto him, We are defiled by the dead body of a man: wherefore are we kept back, that we may not offer an offering of the LORD in his appointed season among the children of Israel?
An offering — Which if we neglect, we must be cut off, and if we keep it in these circumstances, we must also be cut off. What shall we do?
 Speak unto the children of Israel, saying, If any man of you or of your posterity shall be unclean by reason of a dead body, or be in a journey afar off, yet he shall keep the passover unto the LORD.
Unclean or in a journey — Under these two instances the Hebrews think that other hindrances of like nature are comprehended; as if one be hindered by a disease, or by any other such kind of uncleanness; which may seem probable both from the nature of the thing, and the reason of the law which is the same in other cases.
 And if a stranger shall sojourn among you, and will keep the passover unto the LORD; according to the ordinance of the passover, and according to the manner thereof, so shall he do: ye shall have one ordinance, both for the stranger, and for him that was born in the land.
A stranger — Who is a proselyte.
 And on the day that the tabernacle was reared up the cloud covered the tabernacle, namely, the tent of the testimony: and at even there was upon the tabernacle as it were the appearance of fire, until the morning.
Namely, the tent of the testimony — Or, the tabernacle above the tent of the testimony, that is, that part of the tabernacle in which was the testimony, or the ark of the testimony; for there the cloudy pillar stood. This was an evident token of God's special presence with, and providence over them. And this cloud was easily distinguished from other clouds, both by its peculiar figure and by its constant residence in that place.
Fire — That they might better discern it and direct themselves and their journeys or stations by it. Had it been a cloud only, it had scarce been visible by night: And had it been a fire only, it would have been scarce discernable by day. But God was pleased to give them sensible demonstrations, that he kept them night and day.
 And when the cloud was taken up from the tabernacle, then after that the children of Israel journeyed: and in the place where the cloud abode, there the children of Israel pitched their tents.
Was taken up — Or, ascended on high, above its ordinary place, by which it became more visible to all the camp.
 At the commandment of the LORD the children of Israel journeyed, and at the commandment of the LORD they pitched: as long as the cloud abode upon the tabernacle they rested in their tents.
The motion or stay of the cloud is fitly called the command of God, because it was a signification of God's will and their duty.
 And when the cloud tarried long upon the tabernacle many days, then the children of Israel kept the charge of the LORD, and journeyed not.
The charge — That is, the command of God, that they should stay as long as the cloud stayed.
 And so it was, when the cloud abode from even unto the morning, and that the cloud was taken up in the morning, then they journeyed: whether it was by day or by night that the cloud was taken up, they journeyed.
When the cloud abode — This is repeated again and again, because it was a constant miracle, and because it is a matter we should take particular notice of, as highly significant and instructive. It is mentioned long after by David, Psalms 105:39, and by the people of God after their captivity, Nehemiah 9:19. And the guidance of this cloud is spoken of, as signifying the guidance of the Blessed Spirit, Isaiah 63:14. The Spirit of the Lord caused him to rest, and so didst thou lead the people. And thus, in effect, does he guide, all those, who commit their ways unto the Lord. So that they may well say, Father, thy will be done! Dispose of me and mine as thou pleasest. Here I am, waiting on my God, to journey and rest at the commandment of the Lord. What thou wilt, and where thou wilt: only let me be thine, and always in the way of my duty.