Exodus 12:11
This is how you are to eat it: You must be fully dressed for travel, with your sandals on your feet and your staff in your hand. You are to eat in haste; it is the LORD's Passover.

Exodus 12:48
If a foreigner resides with you and wants to celebrate the LORD's Passover, all the males in the household must be circumcised; then he may come near to celebrate it, and he shall be like a native of the land. But no uncircumcised man may eat of it.

Numbers 9:14
If a foreigner dwelling among you wants to observe the Passover to the LORD, he is to do so according to the Passover statute and its ordinances. You are to apply the same statute to both the foreigner and the native of the land."

1 Samuel 2:27
Then a man of God came to Eli and told him, "This is what the LORD says: 'Did I not clearly reveal Myself to your father's house when they were in Egypt under Pharaoh's house?

2 Chronicles 30:18
A large number of the people--many from Ephraim, Manasseh, Issachar, and Zebulun--had not purified themselves, yet they ate the Passover, contrary to what was written. But Hezekiah interceded for them, saying, "May the LORD, who is good, provide atonement for everyone

Ezekiel 44:7
In addition to all your other abominations, you brought in foreigners, uncircumcised in both heart and flesh, to occupy My sanctuary; you defiled My temple when you offered My food--the fat and the blood; you broke My covenant.