Thanks first of all to the grace of God. The grace of God is freely given to those who believe and the righteousness of Christ is credited to him. We read in Romans 4:1-8:
1 What then shall we say was gained by Abraham, our forefather according to the flesh? 2 For if Abraham was justified by works, he has something to boast about, but not before God. 3 For what does the Scripture say? Abraham believed God, and it was counted to him as righteousness. 4 Now to the one who works, his wages are not counted as a gift but as his due. 5 And to the one who does not work but believes in him who justifies the ungodly, his faith is counted as righteousness, 6 just as David also speaks of the blessing of the one to whom God counts righteousness apart from works: 7 Blessed are those whose lawless deeds are forgiven, and whose sins are covered; 8 blessed is the man against whom the Lord will not count his sin.
Secondly, a big hat tip to Scott at Through The Veil for finding this incredible video that says it all.