These verses form a parenthesis, designed to bring out the pervading idea of this and the parallel Epistle — the Divine humanity of Christ as “filling all in all” and “gathering all things” into Himself.
Related Commentaries of Ephesians 4:9
Ephesians 4:9-10
9 (Now that he ascended, what is it but that he also descended first into the lower parts of the earth?
10 He that descended is the same also that ascended up far above all heavens, that he might fillc all things.)