1 Peter 2:5-9

you, also, as living stones, are built up a spiritual temple, a holy priesthood, to offer spiritual sacrifices, most acceptable to God, through Jesus Christ.

Revelation 1:6

and has made us kings and priests to his God and Father; to him be glory and dominion for ever and ever. Amen.

Revelation 5:9-10

And they sung a new song, saying, Worthy art thou to take the scroll, and to open the seals of it; for thou wast slain, and hast redeemed us to God by thy blood, out of every tribe, and language, and people, and nation;

Treasury of Scripture Knowledge

Summary

And he spake unto Korah and unto all his company, saying, Even to morrow the LORD will shew who are his, and who is holy; and will cause him to come near unto him: even him whom he hath chosen will he cause to come near unto him.

Bible References

Who is holy

1 Peter 2:5
you, also, as living stones, are built up a spiritual temple, a holy priesthood, to offer spiritual sacrifices, most acceptable to God, through Jesus Christ.
Revelation 1:6
and has made us kings and priests to his God and Father; to him be glory and dominion for ever and ever. Amen.
Revelation 5:9
And they sung a new song, saying, Worthy art thou to take the scroll, and to open the seals of it; for thou wast slain, and hast redeemed us to God by thy blood, out of every tribe, and language, and people, and nation;