This hymn has been called the "unofficial anthem" of the Church of the Nazarene (and my guess is that it is so for a number of holiness groups). It is sung at every Nazarene ordination service (to my knowledge, anyway). - In fact, I would kind of like to see the next general assembly make this the "official" anthem for the denomination.
It was written (words and music) by Lelia N. Morris in 1900. Mrs. Morris was a Methodist who wrote more than 1,000 gospel songs. She was a friend to the camp meeting, and she wrote a number of holiness hymns. Among them was this one.
Holiness unto the Lord
1. "Called unto holiness," Church of our God,
Purchase of Jesus, redeemed by His blood;
Called from the world and its idols to flee,
Called from the bondage of sin to be free.
(Refrain) "Holiness unto the Lord" is our watch-word and song;
"Holiness unto the Lord" as we're marching along.
Sing it, shout it, loud and long:
"Holiness unto the Lord" now and forever.
2. "Called unto holiness," children of light,
Walking with Jesus in garments of white;
Raiment unsullied, nor tarnished with sin;
God's Holy Spirit abiding within.
3. "Called unto holiness," praise His dear name!
This blessed secret to faith now made plain:
Not our own righteousness, but Christ within,
Living and reigning, and saving from sin.
4. "Called unto holiness," bride of the Lamb,
Waiting the Bride-groom's returning again!
Lift up your heads, for the day draweth near
When in His beauty the King shall appear!