Clarke's Bible Commentary - Psalms 103:4
Verse 4. twjr wykalm h[ oseh rnalachaiv ruchoth, fhl a wytrm mesharethaiv esh lohet. The elements are described as prompt and expedite to perform the Divine commands, like angels or ministers serving in the tabernacle; the Hebrew word wytrm mesharethaiv being a word most common in the sacred ministrations.
Matthew Henry Commentary
Verses 1-9 - Every object we behold calls on us to bless and praise the Lord, who is great. His eternal power and Godhead are clearly shown by the thing which he hath made. God is light, and in him is no darkness at all. The Lord Jesus, the Son of his love, is the Light of the world.
Original Hebrew
עשׂה 6213 מלאכיו 4397 רוחות 7307 משׁרתיו 8334 אשׁ 784 להט׃ 3857