The tree grew, and was strong,.... Grew higher and broader, taller and thicker, increased in boughs and branches, and became strong and stable, that no winds nor storms could move it: this shows the increasing power of Nebuchadnezzar, the enlargement of his dominions, and the stability of his empire:and the height thereof reached unto heaven; higher than any on earth; expressive of his dominion over all nations and people of the earth; or of his ambition of deity itself; and so Saadiah illustrates it by Isa 14:14.
"I will ascend above the heights of the clouds &c."