Ps. 103:20 Bless the LORD, you His angels, Mighty in strength, who perform His word, Obeying the voice of His word! Angels were created to obey God, therefore none of the angels (celestial beings) sinned. Satan, the Devil is not a fallen angel, & demons are not fallen angels.
Ps. 103:19 – The LORD has established His throne in the heavens, And His sovereignty rules over all.
Ps. 103:20 – Bless the LORD, you His angels, Mighty in strength, who perform His word, Obeying the voice of His word!.
Ps. 103:21 – Bless the LORD, all you His hosts, You who serve Him, doing His will.
Heb 1:14 – Are not the angels all ministering spirits (servants) sent out in the service [of God for the assistance] of those who are to inherit salvation?
Satan isn’t a fallen angel https://bornfromabove7.wordpress.com/category/satan-is-not-a-fallen-angel/