Some homes in Israel had an upper story. That room was accessed by means of an inside ladder or wooden staircase or an outside stone staircase or a ladder. In a large upper chamber, possibly similar to the one depicted here, Jesus celebrated the last Passover with his disciples and instituted the commemoration of the Lord’s Evening Meal. (Lu 22:12, 19, 20) On the day of Pentecost 33 C.E., about 120 disciples were apparently in an upper chamber of a house in Jerusalem when God’s spirit was poured out on them.​—Ac 1:13, 15; 2:1-4.