but the basis for that is the work of the Holy Spirit in the heart - ultimately there is no other basis for becoming a Christian, though the Christian understanding of the universe is internally self consistent. However it cannot be absolutely proved - although the events of Easter Day have left a mark that offers a strong suggestion that it is true. Sadly there is no knock down answer to your friend. All you can offer is the witness of your life and the difference that being in relationship to God makes to you, that he can see. If that difference is real, then that provides an additional item with which to challenge him.... |