How can one know God? One can only know God through His revelation, be it general or specific revelation (Rom 1:19-20, 1Cor 2:9-10).
No one can know God unless God reveals Himself. Just like a born child is unable to know his parents unless thus is revealed to him who his parents are. The life he lives on with the parents, the love he receives, and the work and care he observes from the parents affirm him of who they are to him.
I agree with John Calvin’s view that God reveals Himself through the creation or nature, history and human personality. Yet due to our sinful nature which mars our understandings, we are unable to perceive the goodness of God through the corrupted nature, the bloody history wars and the distorted human personality. Only when God reveals in the hearts of us through His grace, we then come to perceive these through the eyes and mind of Christ.
God use a lot of ways reveal Himself, we not only need to know Him but respond to His command will be the Best reaction to Him as His children. I like the word, Faith without action is death. May we know Him more and respond to what He ask us to do more. There is no standard for us to know how much we know Him unless we live out in our personal life.
BalasPadam