We are to study diligently if we want to present ourselves approved to God. We’re approved and unashamed when we interpret the Bible correctly. Don’t accept any teaching that doesn’t line up with the whole of the Bible. If it doesn’t make sense it should be set aside until it does. Don’t believe something just because someone says it’s so.
That’s the surest way to becoming deceived. To know the truth, we must study the truth of God’s word and do it diligently.