"Your salvation rests not on what you have done but on what Christ has done. You, therefore, can be sure of it, no matter how weak the faith by which you hold on to Christ, no matter how strong the attacks and accusations of Satan may be.
Remember that you are not saved by increased levels of holiness, however desirable it is that you should reach them. Indeed, while we often say that we are “saved by faith” or by “faith in Christ,” as Benjamin B. Warfield shrewdly comments, it is not been faith in Christ that saves us. It is Christ who saves us – through faith. Your faith is a poor and crumbling thing, as is your spiritual service. Jesus Christ alone is qualified and able to save you because of what He has done. Cling to anything else and you are relying on flotsam and jetsam floating on a perilous sea. It will bring you down under the waves... But cling to Christ Jesus and His righteousness, and nothing can sink you."