It is a good thing for Christians to study theology and the deeper things of Christ. But sadly, not all Christians are spiritually ready for this. Some, because of their immaturity and child-like bickerings with each other need to relearn the basics: love, repentance, forgiveness. The Apostle warned the Christians at the church of Corinth that He could not teach them the deeper things until they matured spiritually:
Brothers and sisters, I could not address you as people who live by the Spirit but as people who are still worldly—mere infants in Christ. 2 I gave you milk, not solid food, for you were not yet ready for it.Indeed, you are still not ready. (I Corinthians 3:1-2 NIV)
There are some Christians who think they are ready for learning the deeper things of Christianity, but they are not. They are eager to study Bible prophecy, or learn Greek, or study church history, delve into the doctrine of election etc. These things are indeed good things to learn, but if you are spiritually immature, this knowledge might actually do you more harm then good. Knowledge can make us arrogant, proud, and condescending. The Apostle Paul warns us that “knowledge puffs up while love builds up” (I Corinthians 8:1). Some Christians, sadly, have too high of an opinion of themselves. They think they are qualified to become experts on Christianity because they have a sharp intellect. But they are spiritually poor and malnourished. They are bitter, divisive, selfish, troublemakers. It is not good for them to learn more, because they do not use knowledge to edify, but to contradict and tear down others. For this reason it is not always useful to teach all Christians all things. I do not, for instance, like to teach Bible prophecy to someone who is spiritually immature, for fear that they might become a “prophecy addict” and spend their days in church arguing with other Christians about obscure passages in the old testament. Of course the whole Bible is good and needs to be studied, but we need to make sure that we are growing in love as we learn from it, not just knowledge. Once we have stopped growing in love, then we have stopped growing, period, and are only learning facts, not truth.