The Scofield Bible Commentary, by Cyrus Ingerson Scofield, [1917], at sacred-texts.com
dwell
Nebuchadnezzar, first of the Gentile world-kings in whom the times of the Gentiles (Luk 21:24); (Rev 16:14) began, perfectly comprehended the universality of the sway committed to him (Dan 2:37); (Dan 2:38) as also did Cyrus (Ezr 1:2). That they did not actually subject the known earth to their sway is true, but they might have done so. The earth lay in their power.
everlasting kingdom
See (Sa2 7:16); (Psa 89:35-37); (Dan 7:13); (Dan 7:14); (Dan 7:27); (Luk 1:31-33).
tree
Symbol of a great king. (Dan 4:22); (Eze 31:1-14).
watcher
(Dan 4:17); (Dan 4:23); plural in (Dan 4:17).
seven
The number of completeness.
till thou know
The discipline was effective.
Compare (Dan 4:30); (Dan 4:37).
I blessed the most High
A progress may be traced in Nebuchadnezzar's apprehension of the true God.
(1) "God" is "a God of gods" [one amongst the national or tribal gods, but greater than they], and a "Lord Adonai", signifies "Master of kings", and a "revealer of secrets" (Dan 2:47).
(2) He is still a Hebrew deity, but Master of angels, and a God who responds to faith (Dan 3:28).
(3) Here (Dan 4:34); (Dan 4:35) the king rises into a true apprehension of God.
Compare Darius, (Dan 6:25-27).