Acts 12:3

When he saw that it pleased the Jews, he proceeded to seize Peter also. This was during the days of unleavened bread.

Exodus 23:15

You shall observe the feast of unleavened bread. Seven days you shall eat unleavened bread, as I commanded you, at the time appointed in the month Abib (for in it you came out from Egypt), and no one shall appear before me empty.

Acts 24:27

But when two years were fulfilled, Felix was succeeded by Porcius Festus, and desiring to gain favor with the Jews, Felix left Paul in bonds.

Acts 25:9

But Festus, desiring to gain favor with the Jews, answered Paul and said, "Are you willing to go up to Jerusalem, and be judged by me there concerning these things?"

Exodus 12:14-20

This day shall be to you for a memorial, and you shall keep it a feast to Yahweh: throughout your generations you shall keep it a feast by an ordinance forever.

Exodus 13:3-7

Moses said to the people, "Remember this day, in which you came out from Egypt, out of the house of bondage; for by strength of hand Yahweh brought you out from this place. No leavened bread shall be eaten.

Leviticus 23:6-14

On the fifteenth day of the same month is the feast of unleavened bread to Yahweh. Seven days you shall eat unleavened bread.

Psalm 76:10

Surely the wrath of man praises you. The survivors of your wrath are restrained.

Matthew 26:17

Now on the first day of unleavened bread, the disciples came to Jesus, saying to him, "Where do you want us to prepare for you to eat the Passover?"

John 12:43

for they loved men's praise more than God's praise.

John 19:11

Jesus answered, "You would have no power at all against me, unless it were given to you from above. Therefore he who delivered me to you has greater sin."

John 21:18

Most certainly I tell you, when you were young, you dressed yourself, and walked where you wanted to. But when you are old, you will stretch out your hands, and another will dress you, and carry you where you don't want to go."

Acts 2:14

But Peter, standing up with the eleven, lifted up his voice, and spoke out to them, "You men of Judea, and all you who dwell at Jerusalem, let this be known to you, and listen to my words.

Acts 4:13

Now when they saw the boldness of Peter and John, and had perceived that they were unlearned and ignorant men, they marveled. They recognized that they had been with Jesus.

Acts 20:6

We sailed away from Philippi after the days of Unleavened Bread, and came to them at Troas in five days, where we stayed seven days.

1 Corinthians 5:7-8

Purge out the old yeast, that you may be a new lump, even as you are unleavened. For indeed Christ, our Passover, has been sacrificed in our place.

Galatians 1:10

For am I now seeking the favor of men, or of God? Or am I striving to please men? For if I were still pleasing men, I wouldn't be a servant of Christ.

1 Thessalonians 2:4

But even as we have been approved by God to be entrusted with the Good News, so we speak; not as pleasing men, but God, who tests our hearts.

Treasury of Scripture Knowledge

Summary

And because he saw it pleased the Jews, he proceeded further to take Peter also. (Then were the days of unleavened bread.)

Bible References

He saw

Acts 24:27
But when two years were fulfilled, Felix was succeeded by Porcius Festus, and desiring to gain favor with the Jews, Felix left Paul in bonds.
Acts 25:9
But Festus, desiring to gain favor with the Jews, answered Paul and said, "Are you willing to go up to Jerusalem, and be judged by me there concerning these things?"
John 12:43
for they loved men's praise more than God's praise.
Galatians 1:10
For am I now seeking the favor of men, or of God? Or am I striving to please men? For if I were still pleasing men, I wouldn't be a servant of Christ.
1 Thessalonians 2:4
But even as we have been approved by God to be entrusted with the Good News, so we speak; not as pleasing men, but God, who tests our hearts.

He proceeded

Acts 2:14
But Peter, standing up with the eleven, lifted up his voice, and spoke out to them, "You men of Judea, and all you who dwell at Jerusalem, let this be known to you, and listen to my words.
Acts 4:13
Now when they saw the boldness of Peter and John, and had perceived that they were unlearned and ignorant men, they marveled. They recognized that they had been with Jesus.
Psalm 76:10
Surely the wrath of man praises you. The survivors of your wrath are restrained.
John 19:11
Jesus answered, "You would have no power at all against me, unless it were given to you from above. Therefore he who delivered me to you has greater sin."
John 21:18
Most certainly I tell you, when you were young, you dressed yourself, and walked where you wanted to. But when you are old, you will stretch out your hands, and another will dress you, and carry you where you don't want to go."

Then

Exodus 12:14
This day shall be to you for a memorial, and you shall keep it a feast to Yahweh: throughout your generations you shall keep it a feast by an ordinance forever.
Exodus 13:3
Moses said to the people, "Remember this day, in which you came out from Egypt, out of the house of bondage; for by strength of hand Yahweh brought you out from this place. No leavened bread shall be eaten.
Exodus 23:15
You shall observe the feast of unleavened bread. Seven days you shall eat unleavened bread, as I commanded you, at the time appointed in the month Abib (for in it you came out from Egypt), and no one shall appear before me empty.
Leviticus 23:6
On the fifteenth day of the same month is the feast of unleavened bread to Yahweh. Seven days you shall eat unleavened bread.
Matthew 26:17
Now on the first day of unleavened bread, the disciples came to Jesus, saying to him, "Where do you want us to prepare for you to eat the Passover?"
1 Corinthians 5:7
Purge out the old yeast, that you may be a new lump, even as you are unleavened. For indeed Christ, our Passover, has been sacrificed in our place.

General references

Exodus 34:18
"You shall keep the feast of unleavened bread. Seven days you shall eat unleavened bread, as I commanded you, at the time appointed in the month Abib; for in the month Abib you came out from Egypt.
Leviticus 23:6
On the fifteenth day of the same month is the feast of unleavened bread to Yahweh. Seven days you shall eat unleavened bread.
Numbers 28:16
"'In the first month, on the fourteenth day of the month, is Yahweh's Passover.