Although God cannot be understood by the mind, God can be known by the spirit. In chapter seven of the Gita, Lord Krishna tells Arjun that he will understand God after knowing Him. God says the He knows all beings, but they do not know Him. People cannot see God because confusion and desire cover their minds, but they can reach God by seeking Him.
The Sanskrit language distinguishes between spiritual knowledge (seeing, knowing) and rational knowledge (understanding). We can come to know God only by seeking Him. Trying to understand God is a path to knowing Him, yet we cannot understand God without knowing Him. This is an apparent paradox, not a real one. It means that we must take steps toward understanding God in order to experience God. While the absolute cannot be understood by our finite mind, it can be known by our infinite soul. However, the soul can only experience the truth if the mind strives for it to do so. Reason or understanding is a path that leads to spiritual knowledge, but only spiritual knowledge has the power to reveal God.
This excerpt is from On Hinduism by Irina Gajjar. If you’d like to read more from On Hinduism, you can find the book here.