A Divine Analogy

"Christians believe that Jesus Christ is the Son of God because He said so.  The other evidence about Him has convinced them that He was neither a lunatic nor a quack.  Now of course the statement cannot mean that He stands to God in the very same physical and temporal relation which exists between offspring and male parent in the animal world.  It is then a poetical statement.  And such expression must here be necessary because the reality He spoke of is outside our experience...
A man who is both a good son and a good father, and who is continually urged to become a better son and a better father by meditation on the Divine Fatherhood and Sonship, and who thus comes in the end to make that Divine relation the norm to which his own human sonship and fatherhood are still merely analogical, is best receiving the revelation." - C.S. Lewis, The Language of Religion