Salvation comes through Jesus Christ

 

I am The Way The Truth and The Light. No man comes to The Father except through me. John 14:6

Salvation exists in no one else, for their is no other name (Jesus) under heaven given to mankind by which we must be saved. Acts 4:12

In a world heavily deluded by the belief of universalism, that is everyone gets to go to heaven, the great majority of people are fooled by notions of being 'good enough' to be accepted into heaven. But as you consider the 2 verses above you see that the bible and Jesus, very clearly Himself (John 14:6) declares the exclusivity of faith in Christ as the only way to heaven. 

Perception of your 'own goodness' is very relativistic and works on a self determined standard of self assessment fatally omitting an objective standard by which one can enter into the kingdom of Heaven and eternal life. It is self satisfying and a deceptive rationalism of our own minds. The heart is deceitful above all things and desperately wicked: who can know it? Jeremiah 17:9 ~ Above all else guard your heart, for everything you do flows from it. Proverbs 4:23 ~ Jesus stated about the heart:- ...It is what comes from inside that defiles you. For from within, out of a persons heart come evil thoughts, sexual immorality, theft murder, adultery, greed, wickedness, deceit, lustful desires, envy, slander, pride and foolishness. All these vile things come from within; they are what defile you. Mark 7:20-23.

When the bible speaks of the heart it does not mean the actual organ itself but our spiritual center, the part of us that everything flows from, our desires, motivations, intent, thoughts and words and actions.

Indeed as God is spirit (John 4:24) and we are made in the image of God (Genesis 1:27) so of course we have a spirit.