Can angels sin?

Can angels sin?

Many angels have sinned in the past.  Jude 1:6 says
And the angels who did not stay within their own position of authority, but left their proper dwelling, he has kept in eternal chains under gloomy darkness until the judgment of the great day
2 Peter 2:4 also says
For if God did not spare angels when they sinned, but cast them into hell and committed them to chains of gloomy darkness to be kept until the judgment;

Ephesians 6:12   also mentions these evil spiritual beings…
For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places.
It can be assumed that these fallen angels sinned at the same time as Satan, or Lucifer, sinned and fell.  (Isaiah 14:12-15).  Some angels therefore have sinned.  It appears that some angels, or unclean spirits, or demons still roam freely in the universe, while others are kept in eternal chains.

The Bible says that another class of angels is “elect” (1 Timothy 5:21).  The Lord mentioned his holy angels in Matthew 25:31 and Mark 8:38.

The fact that these angels are "elect" and "holy" leads us to believe that they did not sin with Satan, nor will they sin now or in the future.  They are eternally chosen to be set apart to serve God.  Just as believers are called "elect", and therefore secure of eternal life, angels too, must be eternally holy.  Angels have no hope of redemption once fallen.  The death of Christ was for the world of humanity.  Those angels who are elect are not guilty of sinning.

Shad David Sluiter