I know of no sin that grace cannot cover - not only cover but cleanses us from all unrighteousness so that each day is a new beginning.
How does one administer grace personally for themselves? I know of no person who can administer grace for themselves except through faith. Grace is given by God through faith in Jesus Christ and it is a free gift!! Imagine that!!!
For all have sinned, and come short of the glory of God; being justified freely by his grace through the redemption that is in Christ Jesus. Romans 3:23,24
Now to him that worketh is the reward not reckoned of grace but of debt. But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness. Romans 4:4
Therefore being justified by faith, we have peace with God through our Lord Jesus Christ: By whom also we have access by faith into this grace wherein we stand, and rejoice in hope of the glory of God. [Romans. 5:1,2]
But not as the offence, so also is the free gift. For if through the offence of one many be dead, much more the grace of God, and the gift by grace, which is by one man, Jesus Christ, hath abounded unto many. [5:15]
Moreover the law entered, that the offence might abound. But where sin abounded, grace did much more abound. [5:20]
For sin shall not have dominion over you: for you are not under the law, but under grace. [6:14] Sin no longer has dominion over us - sin does not RULE us . . . we are no longer servants to sin for we obey from the heart that form of doctrine which was delivered to us - we are now servants to righteousness - we abhor sin, and within our heart of hearts, we do not want to sin.
Once we believe the doctrine that was delivered unto us and which we have heard, we have received grace from God unto salvation. Now does God know that still being in the flesh, we will sometimes succumb to the lust of the flesh? Apparently so because he set it up to where we could ask forgiveness and be cleansed from all unrighteousness and thus restore us back to fellowship and even this - he who says he is without sin, is a liar.
It's not like He did not know we would fail [that's why He sent his Son] . . . when we fail he takes away our salvation? God is an Indian giver? even knowing that we cannot be without sin 24/7 for the rest of our lives because we are in these earthen vessels - O wretched man that I am - who shall deliver me from this dead body? Jesus Christ will deliver us fully when he redeems us. Even though we are partakers of the divine nature, we still have the flesh nature. God does NOT possess people to where they can immediately walk in the Spirit and not in the flesh - that's why it is called a walk and why it is called a war, a battle!!! We are the ones who have to mortify the deeds of the flesh, we are the ones who have to renew our minds, we are the ones who have to put on the new, put off the old . . . Does Christ in give us the strength we need to overcome? Of course . . . . Greater is he that is me than he that is in the world.
I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of god, who loved me, and gave himself for me. I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain. Gal. 2:20,21
We all have "thorns in the flesh that buffet us" that cause us to be weak . . . And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness.