After the crossing the Sea of Reeds (the Red Sea) Moshe sang a song of praise to Hashem. Now, as the Israelites stand ready to cross into the Promised Land, he again sings a song of praise. Among the many tributes to Hashem for His blessings to our people, Moshe states: יַעֲרֹף כַּמָּטָר לִקְחִי תִּזַּל כַּטַּל אִמְרָתִי, “May my teaching drop like the rain, may my utterance flow like the dew…”. (Deut. 32,2) The Zohar teaches that the rain refers to the Written Torah and the dew to the Oral Torah. What is the connection between rain and dew to the Torah?
Rabbi Moshe Zevi Neriah, who is considered the founder of the Bnei Akiva yeshiva movement in Israel, offers a unique answer to this question. After the farmer plants his seeds the rains come. An onlooker sees the water seep into the ground and thinks to himself, this water will serve no purpose. It sank into the earth and is gone. Later the vegetation springs through the ground, grows and offers its wonderful produce. Only then one realizes the benefit of the rain.
The same is true with the study of Torah. Often a student studies Torah and we see no benefit derived from it. It seems that it had no effect on the student. And behold, after some period of time, maybe months or even years, it suddenly appears that the teachings were not in vain. They accomplished their intention and eventually they bear fruit. They were like the rain and like the dew.