GodsGrace
CF Ambassador
You bring up a good point.The fact that angels sinned and they know God shows the capability of free will beings to sin even though they believe and do so with the full knowledge of the truth.
If one falls away or doesn't "remain" in Christ that shows they did belong or were "in Christ" at some point in time. The warning Jesus gave was to all not just those cut off. "remain in me"
The only thing I can state with 100 percent confidence is remain in Christ and you will never die.
If a person FALLS AWAY from something...
exactly what are they falling away from.
In the case of salvation...they would be falling away from the faith that saves them.
1 Timothy 4:1
1But the Spirit explicitly says that in later times some will fall away from the faith, paying attention to deceitful spirits and doctrines of demons,
2 Corinthians 11:3
3But I am afraid that, as the serpent deceived Eve by his craftiness, your minds will be led astray from the simplicity and purity of devotion to Christ.