They shall enter

Revelation 1:6
who has made us to be a kingdom, priests to His God and Father--to Him be the glory and power forever and ever! Amen.

Ezekiel 41:22
There was an altar of wood three cubits high and two cubits square. It had corners, a base, and sides of wood. And the man told me, "This is the table that is before the LORD."

Malachi 1:7, 12
"By presenting defiled food on My altar." You ask, "How have we defiled You?" "By saying that the table of the LORD is contemptible." . . .

keep

Numbers 18:7, 8
But only you and your sons shall attend to your priesthood for everything concerning the altar, and for what is inside the veil, and you are to perform that service. I am giving you the work of the priesthood as a gift, but any outsider who comes near the sanctuary must be put to death." . . .

Deuteronomy 33:8-10
Concerning Levi he said: "Give Your Thummim to Levi and Your Urim to Your godly one, whom You tested at Massah and contested at the waters of Meribah. . . .