Jealous

Problem: The argument goes something like this: (1) 1 John 4:8 indicates that “God is love;” (2) 1 Corinthians 13:4 says that “love is not jealous” (NAS); and yet (3) Exodus 20:5, along with several other passages, reveals that God is “a jealous God.” “How,” the skeptic asks, “can God be jealous when several verses say God is love and 1 Cor. says love is not jealous?” (McKinsey, 1992). Simply put, if love is not jealous, and God is love, then God logically cannot be called jealous. Or conversely, if love is not jealous, and God is jealous, then God cannot be considered loving. Right? How can these verses be anything but contradictory?