"blood had clogged their chariot-wheels,
I would go up and wash them from sweet wells,
Even with truths that lie too deep for taint...."See in text(Text of the Poem)
“Chariot-wheels” is an indirect or implied metaphor for the machines of warfare that create bloody landscapes. The term summons images of classical or biblical times, foregrounding a biblical allusion in the next line. To “wash them from sweet wells” alludes to John 4:7–14 in the New Testament in which water symbolizes salvation and the Holy Spirit. Biblical allusions continue through the end of this stanza, and through them, the sleeper suggests that knowing the truth about war will save mankind from warfare and end bloodshed.