What does Daniel 4:21 mean?
Daniel is repeating the dream which bothered King Nebuchadnezzar (Daniel 4:4–5). This vision included a massive tree with wonderful leaves and valuable fruits (Daniel 4:10–12). As Daniel continues, he will confirm that this tree symbolizes Nebuchadnezzar, himself (Daniel 4:22). The dream as a whole warns that the king will suffer insanity and humiliation (Daniel 4:22–27).King Nebuchadnezzar was known for his efforts to make Babylon glorious. He rebuilt and beautified the temple of Bel-Marduk. He also beautified the Nebo temple. Further, he devoted time and means to repair and construct sites in Ur, Larsa, Sippar, Erech, and Kutha. He built new streets in Babylon and strengthened the city's walls. Excavations uncovered the Ishtar Gate that was adorned with a series of bulls and dragons in enameled colored brick. Also adorned in enamel brick was Nebuchadnezzar's throne room, which featured geometric designs. His hanging gardens were among the seven wonders of the ancient world.
The tree's beautiful leaves and provision of food for all certainly pictured Nebuchadnezzar. And just as the animals took refuge under the tree and the birds took shelter in the tree, so Nebuchadnezzar's subjects took a measure of security from his rule. However, the dream included the tree being cut down (Daniel 4:13–15).