Your "When" is potentially misleading-
In Colossians 1:15-20, the passage isn't suggesting that Christ Himself was "created." Instead, it emphasizes that Christ is preeminent over all creation, being the "firstborn" (prototokos) in the sense of rank and authority, not origin.
ος εστιν εικων του θεου του αορατου πρωτοτοκος πασης κτισεως
οτι εν αυτω εκτισθη τα παντα τα εν τοις ουρανοις και τα επι της γης τα ορατα και τα αορατα ειτε θρονοι ειτε κυριοτητες ειτε αρχαι ειτε εξουσιαι τα παντα δι αυτου και εις αυτον εκτισται
A more accurate phrasing under "When" might be:
When: Realized through the resurrection and exaltation of Christ.
In this context, "firstborn" signifies that Jesus is the first to be raised from the dead to eternal life, achieving the intended design for humanity and securing eternal redemption, rather than implying that He was part of the created order. This rephrasing maintains the emphasis on His role in redeeming creation and highlights that His preeminence was demonstrated at the resurrection rather than implying His own creation.
Col_1:15
Ch. 1 DOCTRINE - Christ's Preeminence Declared.
1. In the Gospel Message - Col_1:1-12
2. In Redemption - Col_1:13-14
3. In Creation - Col_1:15-17
Vs. 15-17; Seven unique characteristics that qualify Christ to have the supremacy.
Image -- eikon = Icon; 1) Like on coins. The Greek word for “image” is eikōn, from which the Eng. word “icon” derives. It means, “copy” or “likeness.” Jesus
image of the invisible God -- Jesus Christ makes the Father and the Spirit visible to people. Paul later draws on the notion of resembling God when writing about how people should treat one another (Col_3:10).
Firstborn -- refers to title or rank and honor, the highest. Not literally to our English concept of one who is born first.
firstborn of all creation . . It would be wrong to think in physical terms here, as if Paul were asserting that the Son had a physical origin or was somehow created (the classic Arian heresy) rather than existing eternally as the Son, with the Father and the Holy Spirit, in the Godhead. What Paul had in mind was the rights and privileges of a firstborn son, especially the son of a monarch who would inherit ruling sovereignty. This is how the expression is used of David: “I will make him the firstborn, the highest of the kings of the earth” (Psa_89:27). - FSB
the firstborn over all creation . . Cf. Col_1:18. The Greek word for “firstborn” can refer to one who was born first chronologically, but most often refers to pre-eminence in position, or rank (see note on Heb_1:6; cf. Rom_8:29). In both Greek and Jewish culture, the firstborn was the ranking son who had received the right of inheritance from his father, whether he was born first or not.- MSB
[See MSB for an extended grammatical point.]
Thus Jesus is the firstborn in the sense that He has the preeminence (Col_1:18) and possesses the right of inheritance “over all creation” (cf. Heb_1:2; Rev_5:1-7, Rev_5:13). He existed before the creation and is exalted in rank above it. - MSB
Firstborn . . does not mean he was created; it is a title, drawn from the OT, indicating supremacy of rank and priority in time (see, e.g., Psa_89:27). - NLTSB
But I do not expect you to understand.
J.
