Alec Motyer in The Message of Philippians:
Christ turned his back, voluntarily, deliberately, and decisively, upon all that belonged to personal glory, and all that conduced to personal gain. He recognized no limit to the extent to which His obedience to God in self-humbling must go. Whatever he found in himself to be expendable, he spent. While anything was left which could be poured forth, he poured it forth. Nothing was too small to give, or too great. This is the mind and the life which is commended to us by the example of Christ and approved by signal acts of God.