Revelation 15:3b-4: "'Great and amazing are your deeds, O Lord God the Almighty! Just and true are your ways, O King of the nations! 4 Who will not fear, O Lord, and glorify your name? For you alone are holy. All nations will come and worship you, for your righteous acts have been revealed.'"
Genesis 1:1-25: "1 In the beginning, God created the heavens and the earth. 2 The earth was without form and void, and darkness was over the face of the deep. And the Spirit of God was hovering over the face of the waters.
"3 And God said, 'Let there be light,' and there was light. 4 And God saw that the light was good. And God separated the light from the darkness. 5 God called the light Day, and the darkness he called Night. And there was evening and there was morning, the first day.
"6 And God said, 'Let there be an expanse in the midst of the waters, and let it separate the waters from the waters.' 7 And God made the expanse and separated the waters that were under the expanse from the waters that were above the expanse. And it was so. 8 And God called the expanse Heaven. And there was evening and there was morning, the second day.
"9 And God said, 'Let the waters under the heavens be gathered together into one place, and let the dry land appear.' And it was so. 10 God called the dry land Earth, and the waters that were gathered together he called Seas. And God saw that it was good.
"11 And god said, 'Let the earth sprout vegetation, plants yielding seed, and fruit trees bearing fruit in which is their seed, each according to its kind, on the earth.' And it was so. 12 The earth brought forth vegetation, plants yielding seed according to their own kinds, and trees bearing fruit in which is their seed, each according to its kind. And God saw that it was good. 13 and there was evening and there was morning, the third day.
"14 And God said, 'Let there be lights in the expanse of the heavens to separate the day from the night. And let them be for signs and for seasons, and for days and years, 15 and let them be lights in the expanse of the heavens to give light upon the earth.' And it was so. 16 And God made the two great lights - the greater light to rule the day and the lesser light to rule the night - and the stars. 17 And God set them in the expanse of the heavens to give light on the earth, 18 to rule over the day and over the night, and to separate the light from the darkness. And God saw that it was good. 19 And there was evening and there was morning, the fourth day.
"20 And God said, 'Let the waters swarm with swarms of living creatures, and let birds fly above the earth across the expanse of the heavens.' 21 So God created the great sea creatures and every living creature that moves, with which the waters swarm, according to their kinds, and every winged bird according to its kind. And God saw that it was good. 22 And God blessed them, saying, 'Be fruitful and multiply and fill the waters in the seas, and let birds multiply on the earth.' 23 And there was evening and there was morning, the fifth day.
"24 And God said, 'Let the earth bring forth living creatures according to their kinds - livestock and creeping things and beasts of the earth according to their kinds.' and it was so. 25 And God made the beasts of the earth according to their kinds and the livestock according to their kinds, and everything that creeps on the ground according to its kind. And God saw that it was good."
Isaiah 53:3-12: "3 He was despised and rejected by men; a man of sorrows, and acquainted with grief; and as one from whom men hide their faces he was despised, and we esteemed him not. 4 Surely he has borne our griefs and carried our sorrows; yet we esteemed him stricken, smitten by God, and afflicted. 5 But he was wounded for our transgressions; he was crushed for our iniquities; upon him was the chastisement that brought us peace, and with his stripes we are healed. 6 All we like sheep have gone astray; we have turned - every one - to his own way; and the LORD has laid on him the iniquity of us all.
"7 He was oppressed, and he was afflicted, yet he opened not his mouth; like a lamb that is led to the slaughter, and like a sheep that before its shearers is silent, so he opened not his mouth. 8 By oppression and judgement he was taken away; and as for his generation, who considered that he was cut off out of the land of the living, stricken for the transgression of my people? 9 And they made his grave with the wicked and with a rich man in his death, although he had done no violence, and there was no deceit in his mouth.
"10 Yet it was the will of the LORD to crush him; he has put him to grief; when his soul makes an offering for guilt, he shall see his offspring; he shall prolong his days; the will of the LORD shall prosper in his hand. 11 Out of the anguish of his soul he shall see and be satisfied; by his knowledge shall the righteous one, my servant, make many to be accounted righteous, and he shall bear their iniquities. 12 Therefore I will divide him a portion with the many, and he shall divide the spoil with the strong, because he poured out his soul to death and was numbered with the transgressors; yet he bore the sin of many, and makes intercession for the transgressors."
1 Thessalonians 4:16-17: "16 For the Lord himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first. 17 Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord."
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The text from Revelation 15 appears primarily in the refrain (the repeated "How great Thou art!"), but "Great and amazing are your deeds" from verse 3 seems to be combined with the Creation account in Genesis 1 in the hymn's first verse: "O Lord my God, when I in awesome wonder / Consider all the works Thy hand hath made...." Specific examples of God's handiwork are given in the remainder of the first verse and throughout the second.
The text from Isaiah 53 is the basis for the third verse, and the passage from 1 Thessalonians 4 is paraphrased at the beginning of the fourth verse: "When Christ shall come with shout of acclamation / And take me home, what joy shall fill my heart!"