Rooted Faith

A spiritual aspirant requires both faith and reason, or faith and analysis.
Faith leads you to a higher state of existence, whereas reason and analysis, lead you to full liberation or salvation.

Faith one has in the context of one's own spiritual practice must be grounded in reason and understanding.

In order to develop a faith derived through reason or through understanding, a beginning spiritual aspirant should be open-minded. When you are in that state of openness, you are able to reason, and through reasoning you can develop a certain of understanding. When that understanding is strengthened, it strengthened, it gives rise to a conviction, belief, and trust in that object.

Then that faith, trust, or confidence will be very firm because it is rooted in reason and understanding.