Biblical citations in the hymnal:
Romans 8:26-27;
Ephesians 6:18;
Luke 11:1-4; 22:42
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."
Ephesians 6:18: "praying at all times in the Spirit, with all prayer and supplication. To that end keep alert with all perseverance, making supplication for all the saints"
Luke 11:1-4: "1 Now Jesus was praying in a certain place, and when he finished, one of his disciples said to him, 'Lord, teach us to pray, as John taught his disciples.' 2 And he said to them, 'When you pray, say: Father, hallowed be your name, Your kingdom come. 3 Give us each day our daily bread, 4 and forgive us our sins, for we ourselves forgive everyone who is indebted to us. And lead us not into temptation.'"
Luke 22:42: "saying, 'Father, if you are willing, remove this cup from me. Nevertheless, not my will, but yours, be done.'"
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The passage from Romans 8 and the verse from Ephesians seem to be the basis for the hymn. Part of Romans 8:26 is paraphrased in the first verse as "I know not how to ask or what to say." The line "Come, pray in me the prayer I need this day" at the beginning of the second verse bears the closest resemblance to Ephesians 6:18.
The first part of the passage from Luke 11 is alluded to at the end of the first verse: "And only You can teach me how to pray." Both passages from Luke also seem to be referred to in the second verse: Luke 22:42 in the line "Help me to see Your purpose and Your will" and Luke 11:1-4 (particularly verse 4) in the line "Held in forgiving love, let me be still."