Leviticus 25:44

As for your male and female slaves whom you may have—you may acquire male and female slaves from the pagan nations that are around you.

Exodus 12:44

but every man’s slave purchased with money, after you have circumcised him, then he may eat of it.

Psalm 2:8-9

‘Ask of Me, and I will surely give the nations as Your inheritance,
And the very ends of the earth as Your possession.

Isaiah 14:1-2

When the Lord will have compassion on Jacob and again choose Israel, and settle them in their own land, then strangers will join them and attach themselves to the house of Jacob.

Revelation 2:26-27

He who overcomes, and he who keeps My deeds until the end, to him I will give authority over the nations;

Treasury of Scripture Knowledge

Summary

Both thy bondmen, and thy bondmaids, which thou shalt have, shall be of the heathen that are round about you; of them shall ye buy bondmen and bondmaids.

Bible References

General references

Exodus 12:44
but every man’s slave purchased with money, after you have circumcised him, then he may eat of it.
Psalm 2:8
‘Ask of Me, and I will surely give the nations as Your inheritance,
And the very ends of the earth as Your possession.
Isaiah 14:1
When the Lord will have compassion on Jacob and again choose Israel, and settle them in their own land, then strangers will join them and attach themselves to the house of Jacob.
Revelation 2:26
He who overcomes, and he who keeps My deeds until the end, to him I will give authority over the nations;