Sanctify yourselves - What was implied in this command we are not informed; but it is likely that it was the same as that given by Moses, Exodus 19:10-14. They were to wash themselves and their garments, and abstain from every thing that might indispose their minds from a profitable attention to the miracle about to be wrought in their behalf.

And Joshua said unto the people,.... On the third day; and the thirtieth day of the mourning for Moses, Jarchi says, was the first of the three days, and that being the seventh day of the month, this must be the ninth, as it is most clear the morrow was the tenth:

sanctify yourselves; in a ceremonial sense, by washing their bodies and their clothes, and abstaining from their wives; and in a moral sense, by acts of religion and devotion, by prayer and meditation, and the exercise of repentance and, good works: it may denote that sanctification is necessary to our passage over Jordan, or through death to the heavenly Canaan, for without holiness no man shall see the Lord:

for tomorrow the Lord will do wonders among you: in their sight and presence, and for them, by dividing the waters of Jordan, that they might pass through it as on dry land; this, as Kimchi says, was the tenth of Nisan, as is plain from Joshua 4:19.

Joshua then issued instructions (a) to the people to sanctify themselves, because on the morrow the Lord would do wonders among them; and (b) to the priests, to carry the ark of the covenant in front of the people. The issuing of these commands with the prediction of the miracle presupposes that the Lord had already made known His will to Joshua, and serves to confirm our conclusions as to the arrangement of the materials. The sanctification of the people did not consist in the washing of their clothes, which is mentioned in Exodus 19:10, Exodus 19:14, in connection with the act of sanctification, for there was no time for this; nor did it consist in merely changing their clothes, which might be a substitute for washing, according to Genesis 35:2, or in abstinence from connubial intercourse (Exodus 19:15), for this was only the outward side of sanctification. It consisted in spiritual purification also, i.e., in turning the heart to God, in faith and trust in His promise, and in willing obedience to His commandments, that they should lay to heart in a proper way the miracle of grace which the Lord was about to work in the midst of them and on their behalf on the following day. "Wonders:" those miraculous displays of the omnipotence of God for the realization of His covenant of grace, which He had already promised in connection with the conquest of Canaan (Exodus 34:10). In Joshua 3:6, where the command to the priests is given, the fulfilment of the command is also mentioned, and the course of events anticipated in consequence.

And Joshua said unto the people, Sanctify yourselves: for to morrow the LORD will do wonders among you.

3:5 And Joshua said - Or rather, had said, the day before their passage; for it follows, to - morrow. Sanctify yourselves - Both in soul and body, that you may be meet to receive such a favour, and with more reverence observe this great work, and fix it in your hearts.

5. Joshua said unto the people-rather "had said," for as he speaks of "to-morrow," the address must have been made previous to the day of crossing, and the sanctification was in all probability the same as Moses had commanded before the giving of the law, consisting of an outward cleansing (Ex 19:10-15) preparatory to that serious and devout state of mind with which so great a manifestation should be witnessed.

3:1-6 The Israelites came to Jordan in faith, having been told that they should pass it. In the way of duty, let us proceed as far as we can, and depend on the Lord. Joshua led them. Particular notice is taken of his early rising, as afterwards upon other occasions, which shows how little he sought his own ease. Those who would bring great things to pass, must rise early. Love not sleep, lest thou come to poverty. All in public stations should always attend to the duty of their place. The people were to follow the ark. Thus must we walk after the rule of the word, and the direction of the Spirit, in everything; so shall peace be upon us as upon the Israel of God; but we must follow our ministers only as they follow Christ. All their way through the wilderness was an untrodden path, but most so this through Jordan. While we are here, we must expect and prepare to pass ways that we have not passed before; but in the path of duty we may proceed with boldness and cheerfulness. Whether we are called to suffer poverty, pain, labour, persecution, reproach, or death, we are following the Author and Finisher of our faith; nor can we set our feet in any dangerous or difficult spot, through our whole journey, but faith will there see the prints of the Redeemer's feet, who trod that very path to glory above, and bids us follow him, that where he is, we may be also. They were to sanctify themselves. Would we experience the effects of God's love and power, we must put away sin, and be careful not to grieve the Holy Spirit of God.