The Hebrew word moreh has two distinct meanings: (1) a teacher or one who gives instruction, and (2) the early or former rain that falls in autumn in Israel. Both meanings come from the same root yarah (H3384), which means to throw or to point, and from there, to teach (to point the way) or to rain (to pour down).
The double meaning of moreh is theologically rich. The early rain (yoreh/moreh) was essential for softening the ground for plowing and planting — without it, the harvest was impossible. Similarly, the teacher is the one who prepares the heart to receive divine instruction. Joel 2:23 uses moreh in a messianic context, promising the Teacher of Righteousness who will come to Israel, a passage that the Dead Sea Scrolls community applied to their own teacher-leader. Isaiah's promise that 'your teacher will be hidden no more' (Isaiah 30:20) uses the same root, pointing to God as the ultimate instructor of His people.