What starts as an objection turns into a distorted representation of Paul’s gospel. This is what some of the Jewish people were in effect saying: ‘Let us do evil that good may come’ – the words, ‘whose damnation is just’, are Paul’s comment on what they deserve for saying this.
Christians are accused of saying the same thing today. If we say, ‘Salvation is by grace alone. I cannot earn heaven; I cannot deserve it; I cannot keep the law of God, therefore salvation must be free. I must not try to work to secure heaven, but seek free forgiveness’, then the priests of the Church of Rome accuse us of just encouraging sin. If I can have salvation without any works, freely, for nothing, then that just makes me careless and indifferent to sin. I do not have to try. But the gospel does not say that. What the Gospel says is, ‘Yes, salvation is free; you cannot earn it; you cannot contribute to it. But once you are saved, you are given a new heart and a new life, and you want to keep God's law. You have that sense of indebtedness to him, which causes you to want to obey him, and a new heart and a new attitude. So it is slander to say the gospel makes people sinful, but it is right to say that salvation must be free.
We may never say that the end justifies the means; we may never do evil because we believe that some good will come from it. Evil can never be adapted to a good end. The path to righteousness is righteous every step of the way. Christ is our example in this. He need never do evil that good may result. His goodness and truth can always find a way, otherwise God is not Almighty. When Christ came to be our Saviour, he faced problems which were beyond our ability to understand. If anyone was going to need to compromise with evil in order to reach a good end, it was him. But not for a moment did he consider it. Satan was repulsed with the utmost vigour along with all his suggestions: ‘Get thee behind me, Satan’ (Luke 4:8). It follows that there is always a right path, and God never puts us in a position where we are forced to choose between evils. God’s moral system does not contradict itself.