NET
17 So the Israelites who were present observed the Passover at that time, as well as the Feast of Unleavened Bread for seven days.
Darby
17 And the children of Israel that were present held the passover at that time, and the feast of unleavened bread seven days.
KJV
17 And the children of Israel that were present kept the passover at that time, and the feast of unleavened bread seven days.