God created "Lucifer" to:
1) Hearken to the voice of His word.
2) do God's pleasure.
3) minister for them who shall be heirs of salvation.
"Lucifer",
was the devil's good name, but he lost it, when evil was found in him, so I never refer to him in that term. It is mentioned only one time in scripture.
When God made him he was a good angel, but he went bad.
Angels are flaming, ministering spirits. (
Heb 1:7) Their job is to hearken, "... unto the voice of His [God's] word". (
Ps 103:20-21) Within that venue, they are ministers, who do God's pleasure, and they minister "for them who shall be heirs of salvation." (
Heb 2:14) These seem to be the only jobs they are authorized to do. They were never given the legal right of free choice, as man was given.