Gods amazing grace

Ps 62 7 My salvation and my honor depend on God; he is my mighty rock, my refuge. When we are saved we receive grace. Grace is simply God gifting us with everything that we need. He fulfills our needs in Himself so that our lives are defined by what He gives and not what we do. You see this same kind of thinking when the Psalmist talks about sin and forgiveness. 1 O LORD, hear my prayer, listen to my cry for mercy; in your faithfulness and righteousness come to my relief.2 Do not bring your servant into judgment, for no one living is righteous before you. Gods faithfulness and righteousness follow us all the days of our lives. So the Psalmist is saying come from before me and behind me and bring me relief. This is why our honor depends upon God. If in fact God is sovereign and He does whatever pleases Him, then it goes to reason that He is behind us and before us working all things for our good. 
But now look what the Psalmist reasons here about grace and sin. He says that if God were to bring him into judgment then God would need to judge all men. The apostle says that if God were to deal with men according to their sins then everyone would be condemned. So grace gives us certain rites in Gods kingdom. It prevents us from being judged since every sinner who does not have grace enjoys Gods leniency. If those sinners are not burdened by the a legitimate threat then why should we who have received grace be overly concerned for our sins? You will see the Psalmist reasoning like this in Ps 38 9 where the Psalmist complains about the physical ailments that are plaguing him and he feels like God is treating him according to his sin. Then the Psalmist makes this statement.10" All my longings lie open before you, O Lord; my sighing is not hidden from you.10 My heart pounds, my strength fails me; even the light has gone from my eyes. " The Psalmist is stating the reason why he is frustrated with this plague. Because the Psalmist has redeemed longings which place him in the position of vindicating himself so that he will be successful in bringing the curse of the law to bear upon the rebellious nations. vs15 But what kind of concern should we have is the question? here the Psalmist makes a statement about this in the middle of his complaint about the evil treatment from his enemies.  18" I confess my iniquity; I am troubled by my sin." This is sort of like saying look God you know that i have redeemed longings which provides me with a natural understanding that I am a sinner but the bigger problem is how I am being treated. And this shows us just how amazing grace really is.