Daniel 10:2

I-- was mourning three full weeks - The weeks are most probably dated from the time of the termination of the last vision. Calmet proves this by several reasons.

In those days I Daniel was mourning - I was afflicting myself; that is, he had set apart this time as an extraordinary fast. He was sad and troubled. He does not say on what account he was thus troubled, but there can be little doubt that it was on account of his people. This was two years after the order had been given by Cyrus for the restoration of the Hebrew people to their country, but it is not improbable that they met with many embarrassments in their efforts to return, and possibly there may have sprung up in Babylon some difficulties on the subject that greatly affected the mind of Daniel. The difficulties attending such an enterprise as that of restoring a captured people to their country, when the march lay across a vast desert, would at any time have been such as to have made an extraordinary season of prayer and fasting proper.

Three full weeks - Margin, "weeks of days." Hebrew, "Three sevens of days." He does not say whether he had designedly set apart that time to be occupied as a season of fasting, or whether he had, under the influence of deep feeling, continued his fast from day to day until it reached that period. Either supposition will accord with the circumstances of the case, and either would have justified such an act at anytime, for it would be undoubtedly proper to designate a time of extraordinary devotion, or, under the influence of deep feeling, of domestic trouble, of national affliction, to continue such religious exercises from day to day.

10:2 Was mourning - Because he foresaw the many calamities that would befall the Jews for their sins, especially for destroying the Messiah, and rejecting his gospel.