Acts 2:21-36: "21 "'And it shall come to pass that everyone who calls upon the name of the Lord shall be saved.'
"22 'Men of Israel, hear these words: Jesus of Nazareth, a man attested to you by God with mighty works and wonders and signs that God did through him in your midst, as you yourselves know - 23 this Jesus, delivered up according to the definite plan and foreknowledge of God, you crucified and killed by the hands of lawless men. 24 God raised him up, loosing the pangs of death, because it was not possible for him to be held by it. 25 For David says concerning him, 'I saw the Lord always before me, for he is at my right hand that I may not be shaken; 26 therefore my heart was glad, and my tongue rejoiced; my flesh also will dwell in hope. 27 For you will not abandon my soul to Hades, or let your Holy One see corruption. 28 You have made known to me the paths of life; you will make me full of gladness with your presence.'"
"29 'Brothers, I may say to you with confidence about the patriarch David that he both died and was buried, and his tomb is with us to this day. 30 Being therefore a prophet, and knowing that God had sworn with an oath to him that he would set one of his descendants on his throne, 31 he foresaw and spoke about the resurrection of the Christ, that he was not abandoned to Hades, nor did his flesh see corruption. 32 This Jesus God raised up, and of that we all are witnesses. 33 Being therefore exalted at the right hand of God, and having received from the Father the promise of the Holy Spirit, he has poured out this that you yourselves are seeing and hearing. 34 For David did not ascend into the heavens, but he himself says, "The Lord said to my Lord, sit at my right hand, 35 until I make your enemies your footstool." 36 Let all the house of Israel therefore know for certain that God has made him both Lord and Christ, this Jesus whom you crucified.'"
Philippians 2:5-11: "5 Have this mind among yourselves, which is yours in Christ Jesus, 6 who, though he was in the form of God, did not count equality with God a thing to be grasped, 7 but made himself nothing, taking the form of a servant, being born in the likeness of men. 8 And being found in human form, he humbled himself by becoming obedient to the point of death, even death on a cross. 9 Therefore God has highly exalted him and bestowed on him the name that is above every name, 10 so that at the name of Jesus every knee should bow, in heaven and on earth and under the earth, 11 and every tongue confess that Jesus Christ is Lord, to the glory of God the Father."
Hebrews 12:2: "looking to Jesus, the founder and perfecter of our faith, who for the joy that was set before him endured the cross, despising the shame, and is seated at the right hand of the throne of God."
Revelation 7:9-17: "9 After this I looked, and behold, a great multitude that no one could number, from every nation, from all tribes and peoples and languages, standing before the throne and before the Lamb, clothed in white robes, with palm branches in their hands, 10 and crying out with a loud voice, 'Salvation belongs to our God who sits on the throne, and to the Lamb!' 11 And all the angels were standing around the throne and around the elders and the four living creatures, and they fell on their faces before the throne and worshiped God, 12 saying, 'Amen! Blessing and glory and wisdom and thanksgiving and honor and power and might be to our God forever and ever! Amen.'
"13 Then one of the elders addressed me, saying, 'Who are these, clothed in white robes, and from where have they come?' 14 I said to him, 'Sir, you know.' And he said to me, 'These are the ones coming out of the great tribulation. They have washed their robes and made them white in the blood of the Lamb.
"15 'Therefore they are before the throne of God, and serve him day and night in his temple; and he who sits on the throne will shelter them with his presence. 16 They shall hunger no more, neither thirst anymore; the sun shall not strike them, nor any scorching heat. 17 For the Lamb in the midst of the throne will be their shepherd, and he will guide them to springs of living water, and God will wipe away every tear from their eyes.'"
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The text is public domain:
Christ is the world's Redeemer,
The lover of the pure,
The font of heav'nly wisdom,
Our trust and hope secure,
The armor of His soldiers,
The Lord of earth and sky,
Our health while we are living,
Our life when we shall die.
Christ has our host surrounded
With clouds of martyrs bright,
Who wave their palms in triumph
And fire us for the fight.
Then Christ the cross ascended
To save a world undone
And, suff'ring for the sinful,
Our full redemption won.
Down through the realm of darkness
He strode in victory,
And at the hour appointed
He rose triumphantly.
And now, to heav'n ascended,
He sits upon the throne
Whence He had ne'er departed,
His Father's and His own.
Glory to God the Father,
The unbegotten One,
All honor be to Jesus,
His sole-begotten Son,
And to the Holy Spirit -
The perfect Trinity.
Let all the worlds give answer:
Amen! So let it be.
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The Biblical sources for this hymn are a bit difficult to identify specifically. The first half of the second verse ("clouds of martyrs bright, / Who wave their palms in triumph") comes from Revelation 7:9. The other three texts (Acts 2:21-36, Philippians 2:5-11, Hebrews 12:2) seem simply to be summarized in the second half of the second verse and in the third verse. Revelation 7:12 and the last verse of the hymn both ascribe glory and honor to God, but that's about as far as the similarity goes.