Used to explain why Christ is exalted: he preexisted in divine form, humbled himself in incarnation and death, and was then exalted again; cited to answer why a divine Christ could be 'exalted.'
Scripture spotlight
Philippians 2:6-11
bible
6 who, existing in the form of God, didn't consider it robbery to be equal with God, 7 but emptied himself, taking the form of a servant, being made in the likeness of men. 8 And being found in human form, he humbled himself, becoming obedient to death, yes, the death of the cross. 9 Therefore God also highly exalted him, and gave to him the name which is above every name; 10 that at the name of Jesus every knee should bow, of those in heaven, those on earth, and those under the earth, 11 and that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father.
A central disputed text: one side used it to argue Jesus is exalted and worshiped because of obedient suffering, implying derived status; the other used it to argue Christ preexisted in the form of God and voluntarily humbled himself in the incarnation.