“My sinlessness protects me from all harm.”
How does sinlessness guarantee protection from harm? Through the working of the mind.
The mind translates its content into images you see in the world. Pure and loving thoughts result in images that have a pure and loving quality. Thoughts of doubt, grievance and judgment result in images that seem to direct those very qualities back at you. In both cases the images you see show you what you have going on inside.
Purity is part of your true nature. Purity wells up within when you decide to let go of your focus on all that you mistakenly think is less than pure. A pure mind extends purity and the images you see speak of it to you.