The real meaning of this sentence is that when you have a truly sincere belief in God, you can see the existence of God; The less you believe in God, the less God will show you, because your morality can't meet God's requirements.
Buddhists say: when Buddha's nature comes out, it shakes the world in ten directions. The most important thing for a Buddha is a Buddhist practitioner. You don't even believe in God, and you may even denigrate the Buddha. How can a great and sacred Buddha appear in front of you at will? This is one of the reasons why many atheists can't understand those who believe in God.
An idea from Buddhism.
Extended data:
trait
"If you believe, there will be; if you don't believe, there will be nothing." This is a typical thinking mode of "I think, therefore I am".
Its characteristic is that all questions revolve around "I", "I believe in existence and don't believe in existence", and the whole world revolves around "I", which is the only correct "truth" in the world and the universe.
In fact, we all know that many things that we don't know or don't believe for the time being don't mean that they don't exist. Their existence doesn't depend on believing or not, just as the existence of the sun doesn't change with whether the blind can see or not.