Most, certainly not all, Christian congregations support Israel.
Considering the factional, congregational nature of Christianity, that's right.
But it is fair to say that right-facing Protestant churches support Israel, without a doubt... Independedent congregations, nearly to a man, I would say. In fact, Israel has no greater friend than independent Evangelical Christians.
Left-facing Protestants steeped in liberalism,do not.
Catholics and Orthodox are outside my ken. Though the Catholics I know (right-facing) support Israel.