The Christian life begins with faith in the life, death, and resurrection of Jesus. Often we think now we have mastered the basics of the faith now we will move into the deeper substance.
But you see we are very forgetful and the basics of the Christian faith are everything. We do not start the Christian life by faith and continue by works. We start by faith and must continue by faith at every moment.
There is never a time when a Christian can move past the basics. We are weak. But when we are weak in Christ we are strong. If we feel we are strong we deceive ourselves and are weak.
You see all strength is found in God alone. In our weakness we can rest in grace. We were saved by grace and live each moment by grace.
If we do not see this we are blind to the depth of the law. The law is so deep and our weakness of heart so strong we are blind if we do not realize that we need grace each day.
Infinite grace flows from God. It is grace and focusing on the goodness of God by which we grow in sanctification. That is why often teaching on law and how to live well has no impact.
You see we usually know right and wrong very well and it does us little good. It is by looking to God in love that we are changed to be who we were always meant to be.