Wiping a counter that is full of grease with a dry sponge just smears it all over the place. But with gloves on, if you dip that sponge into a chemical similar to bleach, you can get that grease up and clean that area. Friends the word of God is like that chemical. When the grit and grime of fear or despair, comes into contact with a believer who has soaked up his word like a sponge, then as they speak, the word clears and cleans the atmosphere and anything that would seek to attach itself to the soul.
2 Cor 10:4,5 BSB
4 (For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;) 5 Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ;