The imagery in this hymn is drawn from Exodus 32 (Israel worshiping the golden calf) and Hebrews 4:12 (God's word--sharper than a two-edge sword). In it we are invited to zealously use God's Law to show worldly sinners their sin, so that we may then share with them the saving message of the Gospel.
This hymn may be sung to the melody that is called "Kingsfold," which is used for hymns 481 and 520 in Christian Worship.
From Israel's camp there comes a sound –
What is this that I hear?
Is it the victor’s shout of joy?
Is it a cry of fear?
No, from this throng there comes a song,
But not a hymn’s refrain –
It is a song of godless hearts,
Of evil unrestrained.
How sad, that here in Israel's ranks
This pagan song is heard.
This pagan song is heard.
Have these not seen Your works, O Lord,
Or heard Your gracious word?
Alas! The world has drawn them in,
Deceived them with its lies!
Their actions shame their Savior’s name
Before the worldling’s eyes.
Who is there now who’s for the Lord?
Come, gather at my side!
Put on the Spirit’s sword with me,
And wield it now with pride.
As stalwart sons of Levi, slay
The faithless hearts of men
That they may be raised up with Christ
To serve their God again.
The Spirit’s sword is God’s own word,
That mighty, living fire,
Far sharper than a two-edged blade
To pierce each thought’s desire,
To strip away each vain pretense,
Each self-deceiving lie,
And show the soul its fearful state
Before God’s throne on high.
God’s word is death and fiery wrath
To those who savor sin,
But joy and everlasting life
To all who come within
The warm embrace of God’s sweet grace,
Forgiven through His Son,
He who abides at Jesus’ side
Eternal life has won.