God wants everyone to be firmly established in sound doctrine. The more time an individual spends in his Bible, the better grounded in truth he becomes. With the importance placed upon establishing believers, God warned about being “carried about with divers and strange doctrines” (Hebrews 13:9) and about being “tossed to and fro, and carried about with every wind of doctrine” (Ephesians 4:14). The Devil hates Christians who become rooted and grounded in the truth. This is why he weakens and destroys believers by propagating doctrines contrary to scripture. Men may be the facilitators of false doctrines but the ultimate plan of deception is crafted by the Devil himself.
The Bible teaches us that “if any man be in Christ, he is a new creature” (2 Corinthians 5:17). Following salvation, a man's life should display visible changes as he seeks to put off his former conversation. According to scripture, that former conversation fulfilled “the desires of the flesh and of the mind” (Ephesians 2:3). By the grace of God, change is possible because every believer has been redeemed from his “vain conversation” (1 Peter 1:18). The apostle Paul is a great example. Before meeting the Lord on the road to Damascus, Paul's conversation or lifestyle involved mercilessly persecuting the church (Galatians 1:13). In his new life with Christ, he immediately began preaching the very faith he once destroyed (Galatians 1:23). When a person truly places his faith for salvation in the finished work of Christ, his conversation will change accordingly.