Did Jesus really empty himself of God when coming to earth?

The Son had to empty himself of everything that he was while being “in God’s form.” Before coming to earth, Jesus had a favored position in the heavens alongside his Father. Like his Father, Jesus was a spirit while in heaven, enjoying a spiritual glory. In order to come to the earth he had to empty himself of his spiritual glory or heavenly life that he shared with his Father and take on the form of a slave, to be in the likeness of men”. (John 1:14; Gal. 4:4; Phil. 2:7, NW)