Paul helps us realize and important truth that Macklemore, and most of our modern culture, miss entirely, namely that God is not just love. Yes, he is love, but he is more than that. He is also holy. And his holiness makes him entirely intolerant of sin.
So intolerant, in fact, that he required the death of his very own son to pay for the sins of his people. The cross is the perfect example of God’s character. He is both loving (so that he was willing to give up his only son), and he is holy (so much so that he could not leave sin unpunished).