1 Peter 2:11 says, “Beloved, I urge you as sojourners and exiles to abstain from the passions of the flesh, which wage war against your soul.” Commenting on this verse, John Calvin writes,
He reveals our carelessness in this respect, in that while we anxiously avoid enemies from whom we fear danger to the body, we willingly allow enemies hurtful to the soul to destroy us, indeed, we as it were stretch forth our neck to them.
If we but perceived the spiritual danger as easily and obviously as we do physical danger, how differently we might live.