Conviction is one of the greatest powers there is.

We have seen certain leaders sway entire crowds with their convictions.

Even if the ideas they championed were stupid or criminal, in the end, the strength of their conviction won over even the most reluctant. For conviction is a power – directed towards evil, it creates havoc and destruction; but it can also transform the world when it springs from a divine idea and works for the good.
The conviction of a disciple is founded on a knowledge of divine laws and on experiences in past or present incarnations.

When a disciple has acquired this knowledge and has lived it, they possess an unshakeable conviction that renders them all-powerful. If, on the contrary, a disciple lacks such conviction, it is because their knowledge is incomplete.

Omraam Mikhaël Aïvanhov