Daniel 10:12

Then said he unto me, fear not, Daniel
Perceiving him to shake and tremble, and to be intimidated at his presence, he speaks comfortably to him, and encourages him to lay aside his fears, that he might be more capable of attending to what he was about to say to him; and which had a tendency of themselves to remove his fears, and increase his confidence in the Lord: for from the first day thou didst set thine heart to understand;
not so much the former visions which he had an understanding of, as the future state of his people; or rather, the reason of their present distressed condition, being hindered by their enemies in rebuilding their city and temple: and to chasten thyself before thy God;
to humble himself in prayer, and to afflict himself by fasting: thy words were heard;
his prayers were heard, and an answer ordered to be given, the very first day he began to pray, and fast, and mourn, though it was now full three weeks since; just as, at the beginning of his former supplications, Gabriel had a commandment to go and show him that they were heard, ( Daniel 9:23 ) : and I am come forth for thy words;
on account of his prayers, to bring an answer to them; the reason why he came no sooner, when it was three weeks since he received his order, is as follows: