refer

What does ‘one’ refer to in 1 Corinthians 8:6?

What does ‘one’ refer to in 1 Corinthians 8:6?

αλλ ημιν εις θεος ο πατηρ εξ ου τα παντα και ημεις εις αυτον και εις κυριος ιησους χριστος δι ου τα παντα και ημεις δι αυτου [TR – undisputed – Stephanus, Beza, Elzevir and Scrivener : all identical]

‘One’ is applied to two persons.
Firs…