The Terms "The Father" and "The Son"
...in giving the names "the Father" and "the Son" to the first and second persons of the Trinity, eternally differentiates and relates them analogically in terms of a human father-son relation. These names supplied by divine revelation strongly suggest that no better human word can be found to speak of the eternal self-differentiation of the Father and the Son than the words "generation" or "begetting."
Kevin Giles, The Eternal Generation of the Son: Maintaining Orthodoxy in Trinitarian Theology (Downers Grove, IL: InterVarsity Press, 2012), 6