‘Now as for these four youths, God gave them knowledge and skill in all learning and wisdom. And Daniel had understanding in all visions and dreams.'
Not only were their complexions continually clear and full but their minds were also, for the four grew in wisdom and knowledge. Their minds were alert and they absorbed their lessons well. We are probably to see in this that they also grew in the knowledge of God and His ways, for that is the true wisdom. But Daniel especially was blessed. He had a special gift as regards visions and dreams. He had the makings of a seer (compare Numbers 12:6; Isaiah 1:1), as he had already demonstrated. Right from the beginning he was being prepared for his extraordinary career.
This was an age of visions and dreams, especially in Babylon. Men attained high position by their ability to interpret them, for great store was laid on those who were seen as having this ability. But many of the interpretations were facile and men-pleasing, and few could discern the false from the true, as Nebuchadnezzar was very much aware. So in this highly charged environment God gave Daniel full understanding of them. He was able to discern what was real and what was not. It was a special gift from God so that he could bring God's word to this idolatrous court.
There is a lesson here in all this for all young people that they should make full use of any opportunity that God gives them to advance their education. Had these young men been too ‘spiritual' to do so they would have missed out on the future that God had for them.