John Gill Commentary Luke 22:12

"And he will show you a large upper room furnished: there make ready." — Luke 22:12 (ASV)

And he shall show you a large upper room furnished with all things necessary, to eat and drink out of, at the passover. There make ready. The Ethiopic version adds, "for us", as in (Mark 14:15). The Persic version renders it, "there prepare a place"; but this was prepared already; the words design the preparation of the passover, and every thing proper for it.