Just as there is no difference in our sinful state, there is no difference in the way of justification either. We must be justified freely, which means without paying for it by good works.
Let us to respond to God’s grace in the right way. Let no one use it as an encouragement to sin, thinking that they can take advantage of it to sin with impunity, and that grace can be exploited. Let us fear to do that, because grace is so undeserved and so unexpected, and to assume that it will continue when we abuse it is madness. Let us rather be deeply humbled by it, and come boldly to take advantage of it, and at the same time repent and turn away from our sin, asking God to give us new hearts.