They speak of evidences of religion , and much has been done in our day to multiply and confirm them; but after all , Christians are the best evidences of Christianity . Alas ,we have been for two thousand years been printing books to prove Christianity true , and living so as to make people think that we do not believe it . Living witnesses , if they are true, have far more power than the dead letters of a book, however accurate they may be .The last words of Jesus on earth were spoken to leave this charge upon his members, "Ye shall be witnesses unto me , both in Jerusalem , and in all Judea , and in Samaria, and unto the uttermost parts of the earth; and when he had spoken these things, while they beheld , and was taken up , and a cloud received him out of their sight."ACTS 1. 8.9. His last command is , in the place where you happen to be , and in all the neighbourhood as far as your influence reaches , and when opportunity occurs to all mankind, be ye witnesses unto me