Leviticus 23:5 gives the same date for the Passover sacrifice, linking the start of Unleavened Bread to the Passover.

Leviticus 23:6 identifies the fifteenth day as the Feast of Unleavened Bread, aligning with the seven-day eating period.

Numbers 28:16 repeats the date for the Passover, reinforcing the timing of the feast's beginning.

Joshua 5:11 records the Israelites eating unleavened cakes after entering Canaan, showing historical observance of this command.

Matthew 26:17 shows the disciples preparing for Passover on the first day of Unleavened Bread, continuing the NT observance.

Mark 14:12 specifies the first day of Unleavened Bread when the Passover lamb was sacrificed, aligning with the feast timing.

Luke 22:7 mentions the day of Unleavened Bread when the Passover lamb had to be sacrificed, consistent with the date.

2 Chronicles 30:3 notes the postponement of Passover due to insufficient priests, referencing the same prescribed time.

In Acts 20:6, 'after the days of Unleavened Bread' references this same seven-day period, showing early Christian observance of the feast.