“For the weapons of our warfare are not carnal but mighty in God for pulling down strongholds, casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ” (2 Cor 10:4-5).
If what you believe doesn’t affect how you live, it’s either sterile nonsense or else you take it as a theoretical opinion instead of your Lord’s personal word to you.