21. I had seen in the vision at the beginning—namely, in the former vision by the river Ulai (Da 8:1, 16).
fly swiftly—literally, "with weariness," that is, move swiftly as one breathless and wearied out with quick running [Gesenius]. English Version is better (Isa 6:2; Eze 1:6; Re 14:6).
time of … evening oblation—the ninth hour, three o'clock (compare 1Ki 18:36). As formerly, when the temple stood, this hour was devoted to sacrifices, so now to prayer. Daniel, during the whole captivity to the very last, with pious patriotism never forgot God's temple-worship, but speaks of its rites long abolished, as if still in use.