Love isn’t jealous (v. 4, ζηλόω/zēloō). There are two kinds of jealousy: one is the positive intense interest in something or someone, such as God shows for Israel, Paul shows for his churches (2 Cor 12:1:32), and a husband shows for his wife. The other kind of jealousy is the unhealthy envy. It not only covets another’s wealth, but it even begrudges him that wealth. But the loving response to another’s prosperity is joy over their favor. One sign of this evil jealousy is when it’s easier to “weep with those who weep” than it is to “rejoice with those who rejoice.”