Who maketh his angels spirits - The meaning here literally would be, “Who makes the winds his messengers,” or “his angels;” that is, who employs them to execute his purpose; who sends them out as messengers or angels to do his will.
His ministers a flaming fire - That is, Fire is employed by him - in lightnings - to accomplish his purpose as his ministers or his servants. They are entirely under his command. They are sent by him to do his will; to carry out his designs. This is intended to describe the majesty and the power of God - that he can employ wind and lightning - tempest and storm - to go on errands such as he commands; to fulfill his plans; to do his bidding. For the application of this to the angels, and as employed by the apostle Paul to prove the inferiority of the angels to the Messiah, see the notes at Hebrews 1:7.