There's the Christian thought and there's the clergy. Also, I think one should be very careful and distinguish from what comes from the Old testament, which is based on the Hebrew tradition, and the New one, Ellenic in its influences and creation, the real root of Christianity.
Of course in the tarot you've got either the Kabbalah and Christian esoterism.
Anyway the Golden Dawn itself used Christian symbols, dealing with the image of an inner Christ and with the sacrificial, esoteric aspect of his figure.
Regarding the cards themselves, you've got plenty of Christian elements. One for all: The World, where the Virgin is surrounded by the symbols of the four evangelists: the angel, the lion, the bull and the eagle (Matthew, Mark, Luke and John). Or the Hanged Man that relates to the sacrifice of the god, from Odin to Christ.
And of course you've got the Pope/ Hierophant...
But mainly, it is a problem of how you live your Christianity (Protestant, Catholic, whatever)- if you're a Christian - and the relation with the clergy. Many people call themselves Christians and are full of fears, intolerance and no compassion at all.