Daniel 1:8; Daniel 1:20; Daniel 8:15; Daniel 9:3

8 But Daniel made up his mind that he would not defile himself with the king's choice food or with the wine which he drank; so he sought permission from the commander of the officials that he might not defile himself.

20 As for every matter of wisdom and understanding about which the king consulted them, he found them ten times better than all the magicians and conjurers who were in all his realm.

15 When I, Daniel, had seen the vision, I sought to understand it; and behold, standing before me was one who looked like a man.

3 So I gave my attention to the Lord God to seek Him by prayer and supplications, with fasting, sackcloth and ashes.