Since everyone is a slave—either to sin or to God—it’s best to choose the slavery that gives the best results.
The Issue: “What then? Shall we sin because we are not under law but under grace? By no means!” (v. 15; see v. 14). If God loves us whether we sin or not, then why not continue to sin just as much as we please?
God saves people not by law (through works) but by grace (through faith).