Charles Ellicott Commentary Psalms 147:15

"He sendeth out his commandment upon earth; His word runneth very swiftly." — Psalms 147:15 (ASV)

Psalms 33:0 is still in the poet's thought, and Psalm 147:6-7 especially; but some extraordinary season of frost seems to have kindled his inspiration, so that he not only elaborates but improves on his model. The word of God is personified as a messenger who runs swiftly forth to do his bidding, at first in binding up the earth and sheaves with frost, and then (Psalms 147:18) in suddenly thawing and releasing them.