Believe and it is so.
Understanding is not necessary for KNOWING. KNOWING is a facet of BEINGNESS, beyond belief, understanding or even knowledge.
However, belief does create experience much as love and/or fear, in that it has an emotional impact.
It is the power of emotion that fuels belief, love, fear, making of them the channel through which Creative Energy flows into 3D to take form.
They are (FORMS) brought together according to frequency – the patterns defined and manifested according to the quality of the belief behind it.