Daniel 1:18-21 (New International Version)

 ¹⁸ At the end of the time set by the king to bring them in, the chief official presented them to Nebuchadnezzar. ¹⁹ The king talked with them, and he found none equal to Daniel, Hananiah, Mishael and Azariah; so they entered the king's service. ²⁰ 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 his whole kingdom.

 ²¹ And Daniel remained there until the first year of King Cyrus.