Isaiah 61:6 declares Israel priests of the Lord; here God extends that same priestly role to Gentiles.

Exodus 19:6 calls Israel a kingdom of priests; here God includes Gentiles in that priestly calling.

1 Peter 2:5 describes believers as a holy priesthood, fulfilling the promise that Gentiles would serve as priests.

1 Peter 2:9 calls believers a royal priesthood, directly fulfilling God's promise here to take Gentiles as priests.

Revelation 1:6 fulfills Isaiah's promise: believers from all nations are made priests to God, not just Levites.

Revelation 5:10 echoes Isaiah 66:21 — the redeemed are made a kingdom and priests to reign on earth.

Revelation 20:6 describes those in the first resurrection as priests of God — fulfilling the priestly inclusion of Gentiles.

1 Chronicles 15:2 restricts carrying the ark to Levites — Isaiah 66:21 later opens priesthood to Gentiles, a contrast.

Jeremiah 33:22 promises multiplied Levites — Isaiah 66:21 expands that promise to include Gentiles as priests.