You can find plenty of verses in the bible that contradict the idea that "god is love."
If you actually believe some of the atrocities recorded in the bible that are attributed to the biblical god, then "jealous" is a rather generous description of this being.
I asked the originator of the thread what THEY were asking. I don't have a problem with any of this. I once did... but time and patience allowed God to reveal His heart on the matter. And I don't mind sharing a few examples...
How does a God of love, peace and joy destroy all of humanity but one family in a flood and remain the God of love, peace and joy? Simple, really... when all of humanity turns their back on God and despises His ways and follows as their god these half man half angelic beings that were roaming and the earth AND because the bloodline that would lead to the redeeming Messiah needed to remain intact and uncorrupted... then God can do what He did without standing in opposition to His own character.
Same with Sodom... this wasn't a city full of homosexuals like I have heard it preached (although surely their sexual practices included it). No, the WEIGHT of why that city (and others around it) were destroyed was because they, too... had begin to seek angelic beings as sexual partners. We find this in Genesis 18 (the two men sent to Sodom) and in chapter 19 where we learn they are angels and you can go read the story. In Jude we find...
Jude 1:7 as Sodom and Gomorrah, and the cities around them in a similar manner to these, having given themselves over to sexual immorality and gone after
strange flesh, are set forth as an example, suffering the vengeance of eternal fire.
The word for strange is heteros, it means "other, different." They weren't seeking human flesh (neither male nor female) they were seeking DIFFERENT flesh... other worldly flesh, angels. What happened before the flood was about to happen again.
And finally we have Joshua going into city after city and laying waste to everyone. WHY? How does a God of love, peace and joy allow such destruction? Simple...the same reasons. When you study those cities that were destroyed you learn they all had giants... offspring of human women and angels.
Aside from that reason, YHWH (GOD) is the Creator of all things and when others take credit or are given credit or they pull people away from Him... He is zealous over what is rightly HIS... as HE IS THE CREATOR. It's His show... His planet, His universe, and His people.