I'm glad we can agree that, "All Scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness, that the man of God may be complete, thoroughly equipped for every good work." (2 Timothy 3:16-17)
Some don't believe that the above verses apply to (all scripture), they claim much of the Old Testament is no longer relevant to us in the 21st century, but I don't agree with that view at all.
It is all very relevant agreed.