Since the time of Solomon - Compare 2 Chronicles 7:8-10.

Since the time of Solomon - there was not the like in Jerusalem - For from that time the ten tribes had been separated from the true worship of God, and now many of them for the first time, especially from Asher, Issachar, Ephraim, Manasseh, and Zebulun, joined to celebrate the passover.

So there was great joy in Jerusalem,.... Not merely carnal, expressed in eating and drinking, and making merry with one another, but spiritual, on account of the restoration of temple service, and the feasts of the Lord:

for since the time of Solomon the son of David, king of Israel, there was not the like in Jerusalem; not the like joy, so spiritual, sincere, and hearty; nor such a number of persons rejoicing together on such an occasion; nor for so many days together, which were as many as at the dedication of the temple by Solomon.

The joy was great, for there had not been the like in Jerusalem since the days of Solomon. The meaning is, that this feast could be compared only with the feast at the dedication of the temple in the time of Solomon, 2 Chronicles 7:1-10, in respect to its length, the richness of the sacrificial gifts, the multitude of those who participated, and the joyous feeling it caused" (Berth.). The feast at the dedication of the temple had been a festival of fourteen days; for the feast of tabernacles, which lasted seven days, came immediately after the proper dedicatory feast, and since the time of Solomon all the tribes had never been united at a feast in Jerusalem.

So there was great joy in Jerusalem: for since the time of Solomon the son of David king of Israel there was not the like in Jerusalem.

30:21-27 Many prayers were put up to God with the peace-offerings. In these Israel looked to God as the God of their fathers, a God in covenant with them. There was also abundance of good preaching. The Levites read and explained the Scriptures. Faith cometh by hearing, and true religion preaching has abounded. They sang psalms every day: praising God should be much of our work in religious assemblies. Having kept the seven days of the feast in this religious manner, they had so much comfort in it, that they kept other seven days also. This they did with gladness. Holy duties should be done with holy gladness. And when sinners humble themselves before the Lord, they may expect gladness in his ordinances. Those who taste this happiness will not soon grow weary of it, but will be glad to prolong their enjoyment.