The hymn, "Jesus, Thy Blood and Righteousness" is an older, beautiful hymn.  There are several melodies for it--I chose the St. Crispin tune, which I am most familiar with.  It is played on a reed organ in this video.

The hymn was written by Count Nicolaus Ludwig Von Zinzendorf who lived from 1700-1760.  He was born into a wealthy family in Saxony, Germany.  His family wanted him to be a diplomat or statesman.  But from childhood, he had a tender heart toward the Lord and felt God's call to the ministry.

A group of Christians from Moravia were being persecuted, and approached Zinzendorf, asking for refuge on his estate.  He assisted them in building a community named "Herrnhut", a word meaning "Under the Lord's Watch."

In 1732, this community commissioned their first two men for overseas missionary work.  From 1732 to 1742, more than 70 missionaries left Herrnhut, a community of six hundred.

The Moravians were a singing people.  Zinzendorf wrote many songs, the best-known being "Jesus, Thy Blood and Righteousness."  John Wesley translated this hymn to English.

Here are four of the seven verses:

Jesus, Thy blood and righteousness, my beauty are, my glorious dress;

Midst flaming worlds, in these arrayed, with joy shall I lift up my head.

The holy, meek, unspotted Lamb, Who from the Father's bosom came,

Who died for me, e'en me t'a-tone, now for my Lord and God I own.

Lord I believe were sinners more than sands upon the ocean shore,

Thou hast for all a ransom, paid, for all a full atonement made.

Jesus, be endless praise to Thee, Whose boundless mercy hath for me,

For me, and all Thy hands have made, an everlasting ransom paid.