The Cabala was taken up into Christianity during the Renaissance and there's a very rich and extensive tradition of Christian Cabalistic mysticism and spiritual practice. The book I recommend as an introduction to this is Gareth Knight's Experience of the Inner Worlds. Knight was an Anglican Christian and this book of his is entirely focused on Christian esoteric spirituality. You might also look into Martinism, which is an esoteric initiatory tradition with a Christian focus; there are Martinist lodges all over the world these days.