Ezekiel 36:38 - Matthew Poole's English Annotations on the Holy Bible

The holy flock; flocks designed to holy uses, as sacrifices, and therefore further described by the place where they are, Jerusalem. Her solemn feasts; the occasion and time, solemn feasts, either the three annual great feasts, or you may hake in the daily sacrifices. These flocks were for quality the best of all, and for numbers very great, on the solemn feasts; thirty thousand at once of lambs and kids in Josiah's time, and many more at the passover in aftertimes. Thus should men multiply, and fill the cities of replanted Judea.