The "language of symbol" that "is common to all spiritual traditions" is not clear at all, as early Christian texts about spirituality prove to us. As Origen - a prominent early Christian theologian - shows us, there was a strong emphasis on literal interpretation, such as the descent of the Holy Spirit as a real, actual dove. Early Christian writers, such Justin Martyr, provide clear examples of a more literal approach to sacred texts than what you describe about words like "descend," "ascend," and "enter."
Therefore, considering that they are closer to the recorded events, we have to take Luke at his word when he wrote that "the heaven was opened, and the Holy Spirit came down in a bodily appearance, as if a dove, upon him." The imagery suggests physical descent and a physical dove. One would even think the dove to be a symbol. Abdu'l-Baha said: "Thus it is evident that the dove which descended upon Christ was not a physical dove but a spiritual condition expressed, for the sake of comprehension, by a sensible figure." He provides an additional example drive home the point: "For example, in the Old Testament it is said that God appeared as a pillar of fire. Now, that which is intended is not a sensible form but an intelligible reality that has been expressed in such a form." Not so with early Christians. Tertullian said: