Doctrine is instruction in how to believe rightly. There are many churches and denominations presenting doctrine. How can you determine what is right? That's why it's important that you work the scriptures in the Bible for yourself. Scriptures tells us that deceivers overthrew the faith of those that heard them. But when you stay on the proper doctrine of God's word. You not only make yourself whole, save yourself, but when you present the accuracy of God's word and the proper doctrine, it can save the people that hear you. It will bless; it will minister to them. And that's what you're supposed to do.