In what all aspects a Christian differ from others?

We see the outwardly, God sees in the deep recesses of the heart.

"All men will know that you are my disciples, if you have love, one for another."

"Let's look at this from God's perspective. When God looks into the heart of man what does He really see? Does He see a forgiven man or an unforgiven man? God knows if you believe in Christ or not. How? A believer has trusted in Christ for personal forgiveness of sins. Not because you asked, but because you trusted what Christ did for you personally. A sinner is not forgiven on the basis of asking for forgiveness alone. A sinner is forgiven on the basis of what Christ did for him personally on the cross. FORGIVENESS is found in the heart of a believer through the Grace of God. Belief in a crucified Christ brings redemption into the human soul. There is no forgiveness in the heart of an unbeliever. There is no holiness in the heart of an unbeliever. There is no purity in the heart of an unbeliever. Sure I know there is a lot of people also, who say they believe in Christ but are their sins really forgiven? Is their heart cleansed by the Blood of the Lamb? Are they really redeemed by God and living holy? Is the guilt from all the past sins really removed from the human conscience? This is how God makes the distinction between a believer in Christ and the unbeliever. A unrighteous sinner is saved "when" he believes in Christ and forgiveness is found in the human soul. After man believes the gift of Grace makes an unrighteous man... a righteous man. When God looks upon your heart what does he see? A righteous man or unrighteous man? A forgiven man or an unforgiven man? A believer in Christ or an unbeliever. God knows if you actually believe or not. So do you.'

We can distinguish between an Elephant and a dog. This is because Elephant has a trunk. But, I don't find any such natural identification in mankind. That is why I used to say, religions are man made.