Luke 22:12 Meaning

10And he said unto them, Behold, when ye are entered into the city, there shall a man meet you, bearing a pitcher of water; follow him into the house where he entereth in.

11And ye shall say unto the goodman of the house, The Master saith unto thee, Where is the guestchamber, where I shall eat the passover with my disciples?

12And he shall shew you a large upper room furnished: there make ready.

13And they went, and found as he had said unto them: and they made ready the passover.

14And when the hour was come, he sat down, and the twelve apostles with him.