There are two ways you can answer the question “why?” There’s the cause and the function. The motivation and the outcome. The purpose and the result. They are both right answers to the question “why?”. Both need to be addressed. Both need to be answered.
For example… Why should bible teachers be regular bible readers themselves?
The functional reasons are important… so they keep learning, so they keep being humbled, so they understand better, so they can be a model and an example, and so on.
But the causal reasons are also important… because God has spoken and he’s worthy of our attention, because God is their father who speaks for their good, because the word God speaks is lovely to hear.
Both are right aren’t they? But what happens if you focus on one?