All truth is God's truth. We are protected when we live in acknowledgement of the truth surrounding us, and make decisions in light of truth. We must educate ourselves about anything that bears upon who we are and what we are called to do in this life. That would include spiritual truth, as well as any other truth. For example, if we are going outside on a cold and snowy day, the truth is that it could be slippery, and if we don't take precautions with where we step, or how we drive, we could end up falling and hurting ourselves or sliding off the road in our car. This is why it is important that we surround ourselves with the truth of God, the truth of scripture, as well as the truth of physical realities in the world where we live.
Remember: "Having the belt of truth buckled around your waist." Ephesians 6.14