10 these are the things God has revealed to us by his Spirit. The Spirit searches all things, even the deep things of God. (1 Corinthians 2:10 NIV)
We can strive to know many things. To gain wisdom and knowledge, but some things must be revealed to us. Especially when it comes to our own nature and the nature of God.
The Spirit is within and searches all things to help us gain a spiritual understanding. Be that of God or of life.
Thus, He reveals to us as we need that which will guide us through this life.