Matthew 3:16-17: "16 And when Jesus was baptized, immediately he went up from the water, and behold, the heavens were opened to him, and he saw the Spirit of God descending like a dove and coming to rest on him; 17 and behold, a voice from heaven said, 'This is my beloved Son, with whom I am well pleased.'"
2 Corinthians 1:21-22: "21 And it is God who establishes us with you in Christ, and has anointed us, 22 and who has also put his seal on us and given us his Spirit in our hearts as a guarantee."
Titus 3:5-7: "5 he saved us, not because of works done by us in righteousness, but according to his own mercy, by the washing of regeneration and renewal of the Holy Spirit, 6 whom he poured out on us richly through Jesus Christ our Savior, 7 so that being justified by his grace we might become heirs according to the hope of eternal life."
Romans 8:26-27: "26 Likewise the Spirit helps us in our weakness. For we do not know what to pray for as we ought, but the Spirit himself intercedes for us with groanings too deep for words. 27 And he who searches hearts knows what is the mind of the Spirit, because the Spirit intercedes for the saints according to the will of God."
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The text from Matthew appears in the first verse (the title line). The "seal" mentioned in 2 Corinthians 1:22 appears in the second verse: "All the baptized You seal with Your promise." The "washing of regeneration and renewal of the Holy Spirit" is at the end of the third verse: "In this washing that cleanses from sin." And the Spirit's help and intercession from Romans 8:26-27 appears in the fourth verse: "Source of strength and of peace and of love" ... "As You bring all our need / To the throne of God's glory above."
There are a few references to Pentecost in the hymn ("Holy Spirit, the fire celestial, / Who on Pentecost came as foretold" and "Holy Spirit, the wind of great power"), but Acts 2 isn't cited.
The line "Keep our feet from each devilish snare" in the fourth verse might come from two passages from Psalms: Psalm 25:15: "My eyes are ever toward the LORD, for he will pluck my feet out of the net" and Psalm 91:3: "For he will deliver you from the snare of the fowler and from the deadly pestilence." The images are similar, at least.
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There are a few references to Pentecost in the hymn ("Holy Spirit, the fire celestial, / Who on Pentecost came as foretold" and "Holy Spirit, the wind of great power"), but Acts 2 isn't cited.
The line "Keep our feet from each devilish snare" in the fourth verse might come from two passages from Psalms: Psalm 25:15: "My eyes are ever toward the LORD, for he will pluck my feet out of the net" and Psalm 91:3: "For he will deliver you from the snare of the fowler and from the deadly pestilence." The images are similar, at least.