Ezekiel 28 reveals that Satan's fate will be ashes in the Lake of Fire; it would be inconsistent with God's character for Him to inflict pain eternally.

Angels were endowed with the capacity to think, reason, and form attitudes. Their function was and is to be God's messengers and ministers to His creation.

Though many popular notions of angels come from non-biblical sources, the Bible offers the most accurate insights into their role, nature, and function.