Leviticus 22:25

Neither from the hand of a foreigner shall ye offer the bread of your God of any of these; because their corruption is in them, there is a blemish in them: they shall not be accepted for you.

Leviticus 21:6

They shall be holy unto their God, and not profane the name of their God; for the offerings of Jehovah made by fire, the bread of their God, they do offer: therefore they shall be holy.

Leviticus 21:8

Thou shalt sanctify him therefore; for he offereth the bread of thy God: he shall be holy unto thee: for I Jehovah, who sanctify you, am holy.

Leviticus 21:21-22

no man of the seed of Aaron the priest, that hath a blemish, shall come nigh to offer the offerings of Jehovah made by fire: he hath a blemish; he shall not come nigh to offer the bread of his God.

Numbers 15:14-16

And if a stranger sojourn with you, or whosoever may be among you throughout your generations, and will offer an offering made by fire, of a sweet savor unto Jehovah; as ye do, so he shall do.

Numbers 16:40

to be a memorial unto the children of Israel, to the end that no stranger, that is not of the seed of Aaron, come near to burn incense before Jehovah; that he be not as Korah, and as his company: as Jehovah spake unto him by Moses.

Ezra 6:8-10

Moreover I make a decree what ye shall do to these elders of the Jews for the building of this house of God: that of the king's goods, even of the tribute beyond the River, expenses be given with all diligence unto these men, that they be not hindered.

Malachi 1:7-8

Ye offer polluted bread upon mine altar. And ye say, Wherein have we polluted thee? In that ye say, The table of Jehovah is contemptible.

Malachi 1:12-14

But ye profane it, in that ye say, The table of Jehovah is polluted, and the fruit thereof, even its food, is contemptible.

Ephesians 2:12

that ye were at that time separate from Christ, alienated from the commonwealth of Israel, and strangers from the covenants of the promise, having no hope and without God in the world.

1 John 5:18

We know that whosoever is begotten of God sinneth not; but he that was begotten of God keepeth himself, and the evil one toucheth him not.

Treasury of Scripture Knowledge

Summary

Neither from a stranger's hand shall ye offer the bread of your God of any of these; because their corruption is in them, and blemishes be in them: they shall not be accepted for you.

General references

Bible References

A stranger's

Numbers 15:14
And if a stranger sojourn with you, or whosoever may be among you throughout your generations, and will offer an offering made by fire, of a sweet savor unto Jehovah; as ye do, so he shall do.
Numbers 16:40
to be a memorial unto the children of Israel, to the end that no stranger, that is not of the seed of Aaron, come near to burn incense before Jehovah; that he be not as Korah, and as his company: as Jehovah spake unto him by Moses.
Ezra 6:8
Moreover I make a decree what ye shall do to these elders of the Jews for the building of this house of God: that of the king's goods, even of the tribute beyond the River, expenses be given with all diligence unto these men, that they be not hindered.

The bread

Leviticus 21:6
They shall be holy unto their God, and not profane the name of their God; for the offerings of Jehovah made by fire, the bread of their God, they do offer: therefore they shall be holy.
Malachi 1:7
Ye offer polluted bread upon mine altar. And ye say, Wherein have we polluted thee? In that ye say, The table of Jehovah is contemptible.

Because

Ephesians 2:12
that ye were at that time separate from Christ, alienated from the commonwealth of Israel, and strangers from the covenants of the promise, having no hope and without God in the world.
1 John 5:18
We know that whosoever is begotten of God sinneth not; but he that was begotten of God keepeth himself, and the evil one toucheth him not.

General references

Leviticus 22:20
But whatsoever hath a blemish, that shall ye not offer: for it shall not be acceptable for you.
Numbers 9:14
And if a stranger shall sojourn among you, and will keep the passover unto Jehovah; according to the statute of the passover, and according to the ordinance thereof, so shall he do: ye shall have one statute, both for the sojourner, and for him that is born in the land.

American Standard Version Public Domain