by Matt Slick
Some angels can be said to have a sin nature where other ones do not because some angels have fallen into sin and others have not. We are familiar with humans having a sin nature in that we are fallen and struggle with doing right and wrong. Sin has affected all of what we are: body, mind, soul, emotions, etc. The Scriptures tell us that the unbeliever is a slave of sin (Romans 6:14-20) and does no good (Romans 3:10-12), which demonstrates that we have a sin nature. There are many such Scriptures that describe the unbeliever, but we don't find any that describe the fallen nature of the angels who rebelled, except that we find them working against God (Ephesians 6:12, Revelation 12:7-9), sinning (2 Peter 2:4), being deceptive (2 Corinthians 11:14), and injuring people (John 8:44, 2 Corinthians 4:4, 1 Peter 5:8).
We can say that the fallen angels have a sin nature in the sense that they rebelled against God and were changed by that rebellion and will forever be in rebellion against God. In this sense we can say they have fallen, sinful natures. But, those that God elected not to sin (1 Timothy 5:21) do not have sin natures. That is, they did not fall into sinful behavior.