Grace what does it mean?

This is a interesting verse, let us examine and see what it is saying. "For certain men have crept in unnoticed, who long ago were marked out for this condemnation, ungodly men, who turn the grace of God into lewdness and deny the only Lord God and Lord Jesus Christ." This verse is explaining what is taking place today in the churches, what do I mean by this. These men are ungodly and they will be judge by God in the future because they have twisted grace, that is they have given a wrong meaning of grace by saying unmerited favor, mercy, and pardon. With this meaning they have taught that grace means that God overlooks man's sin which is the farthest thing from the truth. Or others have said that it is "God riches at Christ's expense." And yet in our hearts we think that God is lowering His righteousness because we are not able to achieve His standard. But this is quite the opposite let us look at Titus 2:11-14 "For the grace of God that brings salvation has appeared to all men, teaching us that, denying ungodliness and worldly lust, we should live soberly, righteously, and godly in the present age, looking for the blessed hope and glorious appearing of our great God and Savior Jesus Christ, who gave himself for us, that He might redeem us from every lawless deed and purify for Himself His own special people zealous for good works." Do you understand the principle of grace it is not mercy or pardon but it is teaching us that those who have gone through a baptism of repentance it is teaching us not to sin. This is a far cry of God overlooking our sin but He is teaching us to attain to His standard.