17. The fifteenth day. The evening of the 14th day was the feast of the Passover (Ex. 12:6, 14). The 15th day was the day of the Feast of Unleavened Bread (Lev. 23:6). The paschal lamb was slain late in the afternoon of the 14th, and eatenâtogether with unleavened bread and bitter herbsâafter sunset, that is, on the 15th.
Seven days. Compare Ex. 12:15; 13:6, 7; Lev. 23:6.