Solomon declared, “Train up a child in the way he should go, and even when he is old he will not depart from it” (Prov. 22:6). To illustrate this point, I have a 16 year old Miniature Pincher. She was trained from a pup to urinate and release her fecal matter on paper. Nowadays, do to old age, she is stoned blind and can’t hear, but she still finds her way to a piece of paper which I renew in the same place all these years. If it works for dogs, you can rest assured it works with humans.
If a child is taught, corrected, and encouraged to do good, that child will not depart from it. However, if parents neglect to teach, correct, or encourage their children, leaving such to babysitters, schools, churches, and the penal system, then you can rest assured that this child will fall into mischief. Anyone can be a biological parent, but it takes a very special person to train up their children to do right before God.
Athletes are not born but are trained. Soldiers are not born but are trained. The same applies to a child of God. If we are to be good soldiers of Jesus Christ, we too must be trained (2 Tim 2:3,4). If we convert someone, and then neglect to teach them the scripture, correct their mistakes, and encourage their good deeds, that child of God will fall away. As Paul said of Timothy, “..From a child you have known the holy scriptures, which are able to make you wise unto salvation through faith which is in Christ Jesus” (2 Tim 3:15). In the church, God has men to preach the gospel and convert the sinner (2 Tim 2:2 f; 1 Tim 4:16) . It also has qualified elders to train those new converts the doctrine of Christ (Acts 20:28-30). As Paul said, “I have planted, Apollos watered; but God gave the increase” (1 Cor 3:6).
Have you been properly trained to be a good Christian? Has someone taught you to study God’s Word and how to rightly divide the word of truth (2 Tim 2:15)? Have you been taught how to worship God in spirit and in truth (Jn 4:23,24)? Has someone warned you that you will be persecuted and tried for the cause of Christ (2 Tim 3:12 f; Jam 1:12)? Has someone taught you not to add to or take from God’s Word (1 Cor 4:6 ff; 1 Pet 4:11; Rev 22:18,19)? Has anyone taught you to respect all scripture as the very words of God (2 Tim 3:16,17)? If you are missing any of these, then chances are you have departed from the faith (2 Thess 2:15 ff; 2 Thess 3:6; Gal 5:11).