Exodus 12:15-20 gives the original institution of the Feast of Unleavened Bread, which this verse commands to keep.

Exodus 13:6 also commands eating unleavened bread for seven days, identical to this feast requirement.

Exodus 13:7 echoes the same instruction to eat unleavened bread for seven days and remove leaven, reinforcing the feast's requirements.

Exodus 23:15 repeats the command for the Feast of Unleavened Bread in the month of Abib, linking it to the exodus.

Exodus 12:19 gives the same seven-day leaven removal command with penalties, reinforcing the feast's strict observance.

Exodus 12:2 establishes the month of Abib as the first month, which is the appointed time for the feast in the main verse.

Exodus 13:4 marks the month Abib as the time of the Exodus, which is the time appointed for the feast here.

Leviticus 23:6 specifies the fifteenth day of the first month as the start of the seven-day Feast of Unleavened Bread.

Deuteronomy 16:1-4 expands the command, combining Passover and Unleavened Bread with the bread of affliction reason.

Deuteronomy 16:3 calls unleavened bread 'bread of affliction,' adding the reason of haste in leaving Egypt.

2 Chronicles 35:17 records the actual observance of this feast during Josiah's reform, showing continuity of the command.

Mark 14:1 places Jesus' arrest two days before Passover and the Feast of Unleavened Bread, using the feast as a timeline.

Luke 22:1 notes the approaching Feast of Unleavened Bread (called Passover), setting the context for Jesus' final week.

Acts 12:3 refers to the days of Unleavened Bread during Peter's arrest, showing the feast's ongoing observance.

Acts 20:6 shows Paul timing his travels after the feast, indicating its continued observance in the NT era.