Daniel 9:4

and made confession] Leviticus 5:5; Leviticus 16:21; Leviticus 26:40, Num 5:7, 2 Chronicles 30:22; and in a context similar to the present one, Ezra 10:1; Nehemiah 1:6; Nehemiah 9:2-3, as well as below, Daniel 9:20.

O Lord Ah, now! Lord, beginning with a strong particle of entreaty. So Nehemiah 1:5, where the same particle is equally obliterated in A.V., R.V. In Nehemiah 1:11; Isaiah 38:3; Psalms 116:4 (but not in Daniel 9:16), Psalms 118:25, it is rendered I(or we) beseech thee.

the great … commandments A quotation from Deuteronomy 7:9, with the substitution of great and terrible (as Deuteronomy 7:21) for faithful. The whole verse, from and said, is also almost identical with Nehemiah 1:5 (cf. Nehemiah 9:32 a).