“Ye must be born again.” - John 3:7

Jesus said, "And this is the judgment: the light has come into the world, and people loved the darkness rather than the light because their works were evil.  For everyone who does wicked things hates the light and does not come to the light, lest his works should be exposed.  But whoever does what is true comes to the light, so that it may be clearly seen that his works have been carried out in God.” (John 3:19-21)

Jesus made it clear that we cannot be saved by doing good works but that we are not saved in their absence either.  This is why He said that we are all known by the fruit that we bear. The one who is born again does not try to make excuses for sin but rather attempts to walk in the light "so that it can be seen that his works have been carried out in God."  This is why Paul taught that faith (belief) without works (walking in the light) is dead.

Charles Spurgeon said, "Be assured that the NAME of a Christian is not the NATURE of a Christian; and that being born in a Christian land, and being recognized as professing the Christian RELIGION is of no avail whatever, unless there be something more added to it-the being “BORN AGAIN,” is a matter so mysterious, that human words cannot describe it.  It is a change which is known and felt: KNOWN by works of holiness, and felt by a GRACIOUS EXPERIENCE. This great work is supernatural. IT IS NOT an operation which a man performs for himself: a new principle is infused, which works in the heart, renews the soul, and affects the entire man. It is not a change of my name, but a renewal of my nature, so that I am not the man I used to be, but a new man in Christ Jesus. To wash and dress a CORPSE is a far different thing from MAKING IT ALIVE: man can do the one, GOD ALONE can do the other. If you have then, been “born again,” your acknowledgment will be, “It is no longer I who live, but Christ who liveth in me.” May the Lord enable us to be well assured on this vital point, for to be unregenerate is to be unsaved, unpardoned, without God, and without hope."