The contagion of evil is one of mortal mind's inventions. While its phases are varied, each one is entirely false and needs to be exposed as nothingness by immortal Truth's radiant, inextinguishable light. The Bible teaches that God made all, and that all He made is good; therefore the contagion of evil cannot be engendered by God or transmitted through His perfect creation.
Evil, being erroneous and fallacious in premise and conclusion, is self-condemned. Because it is not from God, it lacks reality or power and is condemned to nothingness, to nonexistence. When this is understood, no phase, form, subterfuge, or invention of error can terrorize us or cause us to be afraid of its seeming. A clear sense of God's supremacy empowers us to choose and hold fast to spiritual reality—the allness and omnipresence of God, which prove the somethingness and the onliness of good, and the consequent impotence and nothingness of evil.
Lacking divine origin or cause, the contagion of evil is not conveyed or supported by divine law. Being lawless, it is worthless. A realization of God's impeccable government of man arrests contagion, strips it of its ominous threat or menace, refutes its legality or validity, and exposes its fatuity.