She crieth at the gates - This might be well applied to the preaching of Jesus Christ and his apostles, and their faithful successors in the Christian ministry. He went to the temple, and proclaimed the righteousness of the Most High: he did the same in the synagogues, on the mountains, by the sea-side, in the villages, in the streets of the cities, and in private houses. His disciples followed his track: in the same way, and in the same spirit, they proclaimed the unsearchable riches of Christ. God's wisdom in the hearts of his true ministers directs them to go and to seek sinners. There are, it is true, temples, synagogues, churches, chapels, etc.; but hundreds of thousands never frequent them, and therefore do not hear the voice of truth: wisdom, therefore, must go to them, if she wishes them to receive her instructions. Hence the zealous ministers of Christ go still to the highways and hedges, to the mountains and plains, to the ships and the cottages, to persuade sinners to turn from the error of their ways, and accept that redemption which was procured by the sacrificial offering of Jesus Christ.

She crieth at (b) the gates, at the entry of the city, at the entrance of the doors.
(b) Where the people resorted most and which was the place of justice.

She crieth at the gates,.... Of the temple, or of the city, where the courts of judicature were, and persons met on civil accounts; and where people were continually passing and repassing;
at the entry of the city; meeting those that came out of the country to the city upon trade and business;
at the coming in at the doors; of the temple, or city, or private houses; all these expressions denote the publicness of the Gospel ministry, both by Christ himself, who spake openly to the world, always taught in the synagogues and temple, and in secret said nothing; and who ordered his disciples to preach what they heard and received from him upon the house tops, John 18:20; so did the Apostle Paul, Acts 20:20.

In this verse Bertheau finds, not inappropriately, the designations of place: on this side, on that side, and within the gate. ליד, at the hand, is equivalent to at the side, as Psalm 140:6. לפי, of the town, is the same as לפּתח, Proverbs 9:14, of the house: at the mouth, i.e., at the entrance of the city, thus where they go out and in. There are several of these ways for leaving and entering a city, and on this account מבּוא פתחים are connected: generally where one goes out and in through one of the gates (doors). מבוא, fully represented by the French avenue, the space or way which leads to anything (Fl.). There she raises her voice, which sounds out far and wide; vid., concerning תּרנּה (Graec. Venet. incorrectly, after Rashi, ἀλαλάξουσι), at Proverbs 1:20.

Gates - The places of judgment, and of the confluence of people. The entry - To invite passengers at their first coming and to conduct them to her house. The doors - Of her house.