exodus 2:10 And the child grew, and she brought him unto Pharaoh's daughter, and he became her son. And she called his name Moses: and she said, Because I drew him out of the water. - Free Bible Online

      10. she brought him unto Pharaoh's daughter--Though it must have been nearly as severe a trial for Jochebed to part with him the second time as the first, she was doubtless reconciled to it by her belief in his high destination as the future deliverer of Israel. His age when removed to the palace is not stated; but he was old enough to be well instructed in the principles of the true religion; and those early impressions, deepened by the power of divine grace, were never forgotten or effaced.
      he became her son--by adoption, and his high rank afforded him advantages in education, which in the Providence of God were made subservient to far different purposes from what his royal patroness intended.
      she called his name Moses--His parents might, as usual, at the time of his circumcision, have given him a name, which is traditionally said to have been Joachim. But the name chosen by the princess, whether of Egyptian or Hebrew origin, is the only one by which he has ever been known to the church; and it is a permanent memorial of the painful incidents of his birth and infancy.

JFB.