From Benjamin Sommer’s book “The Bodies of God”
“Some Jews regard Christianity’s claim to be a monotheistic religion with grave suspicion, both because of the doctrine of the Trinity – how can 3 equal 1, and because of Christianity’s core belief that God took bodily form. No Jew, sensitive to Judaism’s own classical sources, however, can fault the theological model Christianity employs when it avows belief in a God who has an earthly body, as well as a Holy Spirit, and a heavenly manifestation. For that model, as we have seen, is a perfectly Jewish one, a religion whose Scripture contains the fluidity traditions, meaning God appearing in bodily form at different times and places, whose teachings emphasize the multiplicity of the Shekinah, God’s manifest Presence, and whose thinkers speak of the Sephirot, these divine emanations, does not differ in its theological essentials from a religion that adores the Triune God.”