How do you respond to a Jewish person when they ask, “Why did God allow The Holocaust to happen?”
Why do good things happen to bad people?
God is all knowing and if God is 100% goos and 100% love then there’s a reason for everything. Why were thousands of Christians killed by the Romans? Millions of Christians killed by Muslims? I don’t know but Hebrews 11 sums it up a bit
Hebrews 11:32-39
32 And what more shall I say? I do not have time to tell about Gideon, Barak, Samson and Jephthah, about David and Samuel and the prophets, 33 who through faith conquered kingdoms, administered justice, and gained what was promised; who shut the mouths of lions, 34 quenched the fury of the flames, and escaped the edge of the sword; whose weakness was turned to strength; and who became powerful in battle and routed foreign armies. 35 Women received back their dead, raised to life again. There were others who were tortured, refusing to be released so that they might gain an even better resurrection. 36 Some faced jeers and flogging, and even chains and imprisonment. 37 They were put to death by stoning;[e] they were sawed in two; they were killed by the sword. They went about in sheepskins and goatskins, destitute, persecuted and mistreated— 38 the world was not worthy of them. They wandered in deserts and mountains, living in caves and in holes in the ground.
39 These were all commended for their faith, yet none of them received what had been promised, 40 since God had planned something better for us so that only together with us would they be made perfect.
The Jews are going to have to figure this out on their own. They should start with "free will".