Resolved not to defile himself

Daniel 1:8-21
Daniel resolved not to defile himself with the royal food and wine, and he asked the chief official for permission not to defile himself this way. Chief official agree to test them 10 days eat vegetables and drink water. Ten days later they looked healthier and better nourished than any of the young me who ate the royal food.
God gave knowledge and understanding of all kinds of literature and learning. And Daniel could understand visions and dreams of all kinds.
In every matter of wisdom and understanding about which the king questioned them, he found them ten times better than all the magicians and enchanters in whole kingdom.
They graduate from the kings school with honors!
Why?
The royal food in Babylon were sacrificed for the gods or touched blood.
The Babylonians do not observe Jewish rules on clean and unclean good, nor do they drain away the blood when they slaughter animals.
The First year of King Cyrus is 539BC. Nebuchadnezzar attacked Jerusalem at 605BC, Daniel and others were taken hostage for the goof behavior of king Jehoiakim. Daniel remained there about 50 years.
Daniel and his friends obeyed the words of the Lord even under hostage situation. They did not trouble the official who took care them.
For Daniel and his friends expressed their faith in action, God blessed them and gave them knowledge and understanding of all kinds of literature and learning. The fountain of wisdom is the Lord.
Resolve: determine (下決心, 立志)
How?
How I resolve to obey the words of the Lord ? Can I resist all of the defile from the world? I will do my best and rely on God's power, for Spirit is within me.