Revelation 19:11-16: "11 Then I saw heaven opened, and behold, a white horse! The one sitting on it is called Faithful and True, and in righteousness he judges and makes war. 12 His eyes are like a flame of fire, and on his head are many diadems, and he has a name written that no one knows but himself. 13 He is clothed in a robe dipped in blood, and the name by which he is called is The Word of God. 14 And the armies of heaven, arrayed in fine linen, white and pure, were following him on white horses. 15 From his mouth comes a sharp sword with which to strike down the nations, and he will rule them with a rod of iron. He will tread the winepress of the fury of the wrath of God the Almighty. 16 On his robe and on his thigh he has a name written, King of kings and Lord of lords."
Luke 9:23-24: "23 And he said to all, 'If anyone would come after me, let him deny himself and take up his cross daily and follow me. 24 For whoever would save his life will lose it, but whoever loses his life for my sake will save it.'"
Acts 7:54-60: "54 Now when they heard these things they were enraged, and they ground their teeth at him. 55 But he, full of the Holy Spirit, gazed into heaven and saw the glory of God, and Jesus standing at the right hand of God. 56 And he said, 'Behold, I see the heavens opened, and the Son of Man standing at the right hand of God.' 57 But they cried out with a loud voice and stopped their ears and rushed together at him. 58 Then they cast him out of the city and stoned him. And the witnesses laid down their garments at the feet of a young man named Saul. 59 And as they were stoning Stephen, he called out, 'Lord Jesus, receive my spirit.' 60 And falling to his knees he cried out with a loud voice, 'Lord, do not hold this sin against them.' And when he had said this, he fell asleep."
1 Timothy 6:12: "Fight the good fight of the faith. Take hold of the eternal life to which you were called and about which you made the good confession in the presence of many witnesses."
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The text is public domain:
The Son of God goes forth to warA kingly crown to gain.His blood-red banner streams afar;Who follows in His train?Who best can drink His cup of woe,Triumphant over pain,Who patient bears his cross below -He follows in His train.The martyr first, whose eagle eyeCould pierce beyond the grave,Who saw his master in the skyAnd called on Him to save.Like Him, with pardon on His tongueIn midst of mortal pain,He prayed for those who did the wrong -Who follows in his train?A glorious band, the chosen few,On whom the Spirit came,Twelve valiant saints - their hope they knowAnd mocked the cross and flame.They met the tyrant's brandished steel,The lion's gory mane;They bowed their necks their death to feel -Who follows in their train?A noble army, men and boys,The matron and the maid,Around the Savior's throne rejoice,In robes of light arrayed.They climbed the steep ascent of heav'nThrough peril, toil, and pain.O God, to us may grace be giv'nTo follow in their train!
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Revelation 19:11-16 and Luke 9:23-24 both appear in the first verse. Revelation 19:11-16 is in roughly the first half, and Luke 9:23-24 is in the last two lines: "Who patient bears his cross below - / He follows in His train."
The hymn's second verse is basically a paraphrase of Acts 7:54-60.
1 Timothy 6:12 seems to appear in the lines "Who follows in his train?" and "Who follows in their train?" at the end of the second and third verses respectively. These lines act as rhetorical questions that urge the hearer to follow the examples in the hymn's verses and to do what 1 Timothy 6:12 says: "Fight the good fight of the faith."
The lines "A glorious band, the chosen few, / On whom the Spirit came" in the third verse refer to the first few verses of Acts 2, and the first half of the fourth verse is drawn from Revelation 7:9-14.
