Daniel 9:13

As it is written in the law of Moses, all this evil is come upon us,.... As it is there threatened it should, and as it is there foretold it would come upon them, so it has; even the selfsame things, in the same manner, and with the same circumstances, as there foretold; which is a proof of the omniscience, omnipotence, and faithfulness of God, and an evidence of the truth of divine revelation; see

Leviticus 26:1:

yet made we not our prayer before the Lord our God; during the seventy years captivity, they might have prayed, and doubtless did, in a lifeless, formal manner; but not sincerely and heartily, in faith and with fervency, under a sense of sin, with confession of it, and true repentance for it, and so as to forsake it, as follows:

that we might turn from our iniquities; for since they did not pray against sin, and entreat the Lord to enable them to turn from it, and forsake it, but continued in a course of disobedience, their prayer was not reckoned prayer:

and understand thy truth; either the truth and faithfulness of God, in fulfilling both his promises and his threatenings; or his law, which is truth, as Jacchiades interprets it; for, had they prayed aright, they would have had an understanding given them of divine truths, both with respect to doctrine and practice; of which they were ignorant, as prayerless persons usually are.