Colossians 1:15 — "He is the image of the invisible God, the firstborn of all creation" — has been a battleground for what Christians mean by "who is Christ." This episode begins a close reading of that single verse through the eyes of Faustus Socinus and the Polish Brethren. We trace how the early church and Reformers used the verse to defend the Son's eternal divinity, then follow Socinian method: a literal, grammatical-historical reading, attention to how "firstborn" functions in Scripture, and a reasoned refusal to import metaphysical assumptions. Expect clear textual argumentation, primary sources, and the live intellectual texture of a seventeenth-century theological controversy.