There comes the baffling call of God in our lives also. The call of God can never be stated explicitly; it is implicit. The call of God is like the call of the sea, no one hears it but the one who has the nature of the sea in him. It cannot be stated definitely what the call of God is to, because his call is to be in comradeship with himself for his own purposes, and the test is to believe that God knows what he is after.
(My Utmost for His Highest, emphasis added)