Romans 9:15 For he says to Moses, “I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion.”
God is sworn to carry out justice upon sinful mankind. In order that he may have mercy on some, he executed his justice on his own son as a substitute for them. Jesus Christ paid the penalty for the sins of those that God was pleased to give mercy by his sovereign grace. Therefore, justice is completely upheld and no one receives injustice. None receive a free pass, but some receive mercy through the ministry and atonement of Jesus Christ. Although many people resent salvation being determined by God and not human decision, God made it clear to Moses that his sovereign decree would determine who would receive mercy.
Focus on Christ #140