The moral and spiritual facts of health, whispered into thought, produce very direct and marked effects on the body.
When you fill a dank room with fresh air, everyone breathing in that room knows the difference. It feels and smells better!
The same rule applies to consciousness. When enlightening spiritual truth is poured into thought, the thinker of those thoughts feels the difference. They feel better. Perhaps, even healed of a burdensome belief or fear.
Never underestimate the good effect of moral and spiritual thinking poured into consciousness. It can be done silently, as a mental whisper, but its effect can be pronounced, like the roar of a lion.