Here we have,

I.The pleasure which David and other pious Israelites took in approaching to and attending upon God in public ordinances, Psa 122:1, Psa 122:2.

1.The invitation to them was very welcome. David was himself glad, and would have every Israelite to say that he was glad, when he was called upon to go up to the house of the Lord. Note, (1.) It is the will of God that we should worship him in concert, that many should join together to wait upon him in public ordinances. We ought to worship God in our own houses, but that is not enough; we must go into the house of the Lord, to pay our homage to him there, and not forsake the assembling of ourselves together. (2.) We should not only agree with one another, but excite and stir up one another, to go to worship God in public. Let us go; not, "Do you go and pray for us, and we will stay at home;" but, We will go also, Zac 8:21. Not, "Do you go before, and we will follow at our leisure;" or, "We will go first, and you shall come after us;" but, "Let us go together, for the honour of God and for our mutual edification and encouragement." We ourselves are slow and backward, and others are so too, and therefore we should thus quicken and sharpen one another to that which is good, as iron sharpens iron. (3.) Those that rejoice in God will rejoice in calls and opportunities to wait upon him. David himself, though he had as little need of a spur to his zeal in religious exercises as any, yet was so far from taking it as an affront that he was glad of it as a kindness when he was called upon to go up to the house of the Lord with the meanest of his subjects. We should desire our Christian friends, when they have any good work in hand, to call for us and take us along with them.

2.The prospect of them was very pleasing. They speak it with a holy triumph (Psa 122:2): Our feet shall stand within thy gates, O Jerusalem! Those that came out of the country, when they found the journey tedious, comforted themselves with this, that they should be in Jerusalem shortly, and that would make amends for all the fatigues of their journey. We shall stand there as servants; it is desirable to have a place in Jerusalem, though it be among those that stand by (Zac 3:7), though it be the door keeper's place, Psa 84:10. We have now got a resting-place for the ark, and where it is there will we be.

II.The praises of Jerusalem, as Psa 48:12.

1.It is the beautiful city, not only for situation, but for building. It is built into a city, the houses not scattered, but contiguous, and the streets fair and spacious. It is built uniform, compact together, the houses strengthening and supporting one another. Though the city was divided into the higher and lower town, yet the Jebusites being driven out, and it being entirely in the possession of God's people, it is said to be compact together. It was a type of the gospel-church, which is compact together in holy love and Christian communion, so that it is all as one city.

2.It is the holy city, Psa 122:4. It is the place where all Israel meet one another: Thither the tribes go up, from all parts of the country, as one man, under the character of the tribes of the Lord, in obedience to his command. It is the place appointed for their general rendezvous; and they come together, (1.) To receive instruction from God; they come to the testimony of Israel, to hear what God has to say to them and to consult his oracle. (2.) To ascribe the glory to God, to give thanks to the name of the Lord, which we have all reason to do, especially those that have the testimony of Israel among them. If God speak to us by his word, we have reason to answer him by our thanksgivings. See on what errand we go to public worship, to give thanks.

3.It is the royal city (Psa 122:5): There are set thrones of judgment. Therefore the people had reason to be in love with Jerusalem, because justice was administered there by a man after God's own heart. The civil interests of the people were as well secured as their ecclesiastical concerns; and very happy they were in their courts of judicature, which were erected in Jerusalem, as with us in Westminster Hall. Observe, What a goodly sight it was to see the testimony of Israel and the thrones of judgment such near neighbours, and they are good neighbours, which may greatly befriend one another. Let the testimony of Israel direct the thrones of judgment, and the thrones of judgment protect the testimony of Israel.

Pray for the peace of Jerusalem,.... This is said to the persons that solicited the psalmist to go into the house of the Lord; to the truly godly among the tribes that went thither to worship; to his brethren and companions, for whose sake he wished well to Zion; to praying souls, who should not be singular and selfish; not only pray for themselves, but for others; for all saints, and for the church of God in general; for Jerusalem, not merely literally considered; though as that was the metropolis of the nation, and many of them the psalmist addresses were inhabitants of it, it became them to seek and pray for the peace of it, their own peace being concerned in it; see Jer 29:7; but for the spiritual and heavenly Jerusalem, the church of God, and for the peace of it; that Christ, the Man, the Peace, the Peacemaker, who then was not come, might come; that the members of it might enjoy spiritual peace in their son is, and might have peace one with another, and be at peace with their enemies; and enjoy the abundance of peace and prosperity, which will be in the latter day; and will lie in freedom from persecution, in a destruction of antichrist and all the the enemies of the church; in the purity of Gospel truths and ordinances, and the spread of them; in numerous conversions of Jews and Gentiles; in the unity of the Lord's people in sentiment, worship, and affection; and in a large increase of spiritual light and holiness: all which should be earnestly prayed for by the well-wishers of the cause of Christ; see Isa 62:6. There may be an allusion to the name of Jerusalem, which signifies "they shall see peace"; and it should be prayed for that they might. The argument enforcing this duty exhorted to follows:

they shall prosper that love thee; that love Jerusalem, the church of God; that love Christ, her King; the saints, her citizens; her laws and ordinances; and the word of the Lord that goes out of her, and is ministered in her: which is shown by an attendance with her on them, and by their prayers for her prosperity and welfare: and such prosper in their outward affairs, as Obededom and his family were blessed for the sake of the ark he took in and took care of; and in their spiritual affairs their souls prosper, as Gaius's did, and as such do who are favoured with the discoveries of the love of God, with an application of pardoning grace and mercy; have a spiritual appetite for the word; when their graces are in lively exercise, their corruptions are subdued, spiritual light and zeal for truth are increased, inward strength is renewed, communion with God is enjoyed, and they are fruitful in every good work.