Life is about growth, and to grow we need God who works through man to be a guide, a mentor, a teacher. A teacher is a guide who has been the path before us. For a long time, and since the beginning of creation, man has been on this planet. Each generation has been a teacher to the next generation.
In life, one grows up from infancy to old age. Their activities, behavior and beliefs determine what they will be. If taught in Christian homes, they will grow up practicing Christianity which focuses on the teaching of salvation. If they grow up in other religious settings, their lives will demonstrate their belief and faith accordingly, and they will live according to what they were taught. With this in mind, teaching is therefore the process of imparting knowledge from one person to another, and it affects children and followers who are brought up in different religious environment. The main point here is that different religious teachings will have effects on the growth of their children and followers.