The speaker takes orders from a tree, and does so without question. When the tree says stay, the speaker stays. When it says go, they go. The sentences are short and plain, and the repeated pattern makes the exchange feel like a ritual, or a very old habit of trust. Nothing is explained, and the speaker never argues or asks why.
Then something small changes. The third command, "come," is answered with "I come," in the present tense rather than the past. The speaker is still moving, still listening. The poem ends mid-sentence with "The tree said" and nothing after it. We don't know what comes next, and the silence is the most striking part of the poem.
The mood is calm and quiet, but a little uneasy at the end. It could suggest deep closeness with nature, or a moment of waiting, when the guiding voice has stopped and the speaker has to listen harder, or choose alone.