By the Grace of God... not by works!

"By the grace of God, I am what I am" ~ 1 Corinthians 15:10.

The humble Christian will not be easily angered—nor will he/she be dogmatic and judgmental. He/she will be compassionate and tender towards the infirmities of his/her fellow-sinners; knowing, that, if there is any difference between him/herself and others—it is grace that has made it.

He/she knows that he/she has the seeds of every evil in his/her own heart! Under all trials and afflictions, the humble Christian will look to the hand of the Lord, and lay his/her mouth in the dust—acknowledging that he/she suffers much less than his/her iniquities have deserved. ~ http://gracegems.org/Newton/john_newton_excerpts.htm

We are saved by the Grace of God. First, we experience His Mercy and then His Grace poured out upon us! For He says to Moses: “I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion.” So then, it does not depend on man’s desire or effort, but on God’s mercy... Romans 9:15-16.

For it is by grace you have been saved through faith, and this not from yourselves; it is the gift of God...Ephesians 2:8

Whatever God does, must be just. Wherein the holy, happy people of God differ from others, God's grace alone makes them differ. In this preventing, effectual, distinguishing grace, he acts as a benefactor, whose grace is his own. None have deserved it; so that those who are saved, must thank God only; and those who perish, must blame themselves only, Hos 13:9. 

God is bound no further than he has been pleased to bind himself by his own covenant and promise, which is his revealed will. And this is, that he will receive, and not cast out, those that come to Christ; but the drawing of souls in order to that coming, is an anticipating, distinguishing favor to whom he will. 

Why does he yet find fault? This is not an objection to be made by the creature against his Creator, by man against God. The truth, as it is in Jesus, abases man as nothing, as less than nothing, and advances God as sovereign Lord of all ~ Matthew Henry Commentary.