When it comes to the kind of work that is spiritual in nature, engaged in for the sake of others or in obedience to the Creator, the Bible is filled with principle and practice.
As human beings we want sure foundations for living and for teaching our children, not possibly weak footings of someone else's too often unproven ideas.
The issues of faith and reason, science and religion, underlie much of the current distress in the world. Yet they are not necessarily opposed to each other.