Oh, you're thinking of Israelolatry. That's not evangelism because it often agrees to cut out the evangel entirely in the hopes that giving lots of money without any strings attached will earn virtue signals. Ayn Rand pointed out that "selfless" altruism is self-destructive, but one's neighbor's actual good is pursued alongside one's own good. Love your neighbor as yourself means both are pursued by pursuing God as Love. Therefore to love my fellow man I seek to give him good things in a way that he can receive them for his benefit: not money divorced from grace, but good news that they agree in their idiom improves their lives. Christians need to lay off a few messages that fight good news to every creature, and Jews need to lay off their own belligerence and resistance to their own culture about Messiah, which they've suppressed for themselves as well as any other history for others. When those are both held back (by the sword in fact), the theater of creative evangelism (i.e. underground contact that builds bridges) can be engaged. Then we get to your end goal by means of "there is neither Jew nor Gentile in Christ": Jews disappear as Jews because they've become completed Jews, just as my own nationality disappears in Christ.