Charles H. Spurgeon on Psalms 147:18

He sendeth out his word, and melteth them. Israel in the captivity had been icebound, like ships of Arctic voyagers in the Polar Sea; but God sent forth the vernal breeze of his love, and the water flowed, the ice melted, and they were released. God turned their captivity, and, their icy chains being melted by the solar beams of God's mercy, they flowed in fresh and buoyant streams, like "rivers of the south", shining in the sun. See Ps 126:4. So it was on the day of Pentecost. The winter of spiritual captivity was thawed and dissolved by the soft breath of the Holy Ghost, and the earth laughed and bloomed with spring tide flowers of faith, love, and joy. —Christopher Wordsworth.