Apostates Walking After Their Own Lusts

Jude does not actually use the word “apostate” to describe these ungodly false prophets. He often just says, “These…” (Jude 16; cf. vss. 19, 14, 12, 10, etc.). “These are murmurers, complainers, walking after their own lusts…” (Jude 16; cf. II Peter 3:3).
APOSTATES MURMUR AND COMPLAIN;
APOSTATES WALK AFTER THEIR OWN LUSTS;
APOSTATES ARE CARNAL AND SENSUAL.
We must take our stand against all religious error – Romanism, liberalism, ecumenism, new-evangelicalism, the seeker-friendly movement, etc. This is the great theme of the little book of Jude – “that ye should earnestly contend for the faith which was once delivered unto the saints” (Jude 3).
In Paul's epistles he warns of legalism and gnosticism. He says in I Timothy 6:20, 21, “O Timothy, keep that which is committed to thy trust, avoiding profane and vain babblings, and oppositions of science falsely so called: Which some professing have erred concerning the faith. Grace be with thee. Amen.”