For as the rain cometh down, and the snow from heaven, and returneth not thither, but watereth the earth, and maketh it bring forth and bud, that it may give seed to the sower, and bread to the eater: so shall my word be that goeth forth out of my mouth: it shall not return unto me void, but it shall accomplish that which I please, and it shall prosper in the thing whereto I sent it. Isaiah 55:10-11
The water and the word do not derive from man, but come down from God out of heaven. God’s thoughts and ways are distinct from man’s thoughts and ways (Isaiah 55:8-9; and man’s need to be repented of, verse 7; also cf. Proverbs 14:12). “Every good gift and every perfect gift is from above, and cometh down from the Father of lights, with whom is no variableness, neither shadow of turning” (James 1:17).
The water and the word serve God’s sovereign purpose. “But our God is in the heavens: he hath done whatsoever he hath pleased” (Psalm 115:3). The “Father which is in heaven…maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust” (Matthew 5:45). Compare 1 Samuel 12:18, Job 5:8-10, Psalm 107:20, Psalm 147:15-18. “The Lord gave the word: great was the company of those that published it” (Psalm 68:11).
The water and the word bring life, refreshing, and sustenance. Compare Psalm 65:10, Isaiah 57:15, John 6:63, John 10:10, Acts 14:17, and Ephesians 5:26. As the rain and the snow nourishes the earth that it may bring forth life and the sustenance of life, so does the word of God as he sends it forth. “Verily, verily, I say unto you, The hour is coming, and now is, when the dead shall hear the voice of the Son of God: and they that hear shall live” (John 5:25).