The only other time that the perfect tense of αναβαινω is used in the NT writings is in Jn 20:17
(‘I have not yet ascended’!), so that it is reasonable to assume a connection.
Since the katabasis-anabasis pattern is typical of the Fourth Gospel )on
our verse the descent seems to precede the ascent as well), we are to explain
the verse from the perspective of the Evangelist, in other words, we have here
a description from a post-Easter viewpoint, when Jesus’s αναβασις (= his return to the Father through
passion-resurrection-ascension) had already become a fait accompli. (Arie
W. Zwiep, The Ascension of the Messiah in Lukan Christology [Supplements
to Novum Testamentum; 87; Leiden: Brill, 1997], 135)
