Uniting man to God

“He that is God by nature became, and is in truth, a man from Heaven; not merely inspired [ie by the Holy Spirit], as some of those who do not rightly understand the depth of the mystery imagine, but being at the same time God and man, in order that, uniting as it were in Himself things widely opposed by nature, and averse to fusion with each other, He might enable man to share and partake of the nature of God.” St. Cyril of Alexandria, On John 17.20