The Bible is not the only place to obtain good instructions. We also can get our instructions from other people, godly people, as well as the scripture. God has many ways to teach us, but it is not always easy going. In 2 Timothy 2, Paul told Timothy to be strong in the things he heard from Paul as well as in the grace of Christ Jesus. It is hard to work to keep on the true course. Along the way we must (like Timothy and Paul): endure hardness, keep from entanglement, strive lawfully, suffer trouble, endure all things. As we meet others we should: put them in remembrance, give them a charge, challenge them to study. We all need to shun profane and vain babblings, depart from iniquity. As best we can we need to recover from hurts from bad thinking, we should flee youthful lusts, follow righteousness, avoid ill-conceived questions. We should not strive, but be gentle, meekly instructing others as we have opportunity.
Be cautious of: "words that are to no profit but to the subverting of the hearers, profane and vain babblings". Bad words will eat like a canker. We must be aware so we can identify, avoid, and fight against false teaching. Yet we should not jump down the throat of everyone that says something wrong. We should attempt to achieve a right understanding in line with God's principles.
Then we can be a means of changing those who want to be godly. If they won't change, we should avoid them and take steps to protect the innocent, if necessary.
