Amen! A tree being dead to the core as such a tree was utterly incapable of producing good fruit then being
uprooted is twice dead. The NASB says "doubly dead."
Notice in
Matthew 15:13 that Jesus said every plant that my Heavenly Father
did not plant will be
uprooted.
Jude is exhorting believers to contend earnestly for the faith which was once for all delivered to the saints (vs. 3) because certain ungodly men have crept in unnoticed. Jude further describes these
ungodly men as ones who cause divisions, worldly-minded,
devoid of the Spirit. (vs. 19)
In
contrast with those who are called, sanctified by God the Father, and
preserved in Jesus Christ. (vs. 1)