Wind.
The wind, as all else, is used by God to work out His purposes with man. Exodus 10:13; Psalms 135:7; Ezekiel 13:13. As the unseen wind comes and goes we know not whither, "so is every one that is born of the Spirit." John 3:8. Its power is felt, and the result abides. The wind is also used as a symbol of the unseen influence of Satan, Jude 1; and where permitted he carries out his evil designs by the wind. Job 1:19