Assurance: How to know you are a Christian

“Reader, whoever you may be, I exhort you never to be satisfied with anything short of a full assurance of your own salvation. With faith, no doubt, you must begin, -with simple, child-like faith: ‘Belive on the Lord Jesus Christ, and thou shalt be saved.’ But from faith go on to assurance. Rest not till you can say, “I know whom I have believed.’- J.C. Ryle