The Covenant of Redemption

Many theologians have spoken of a covenant of redemption.  I have often wondered, while very sympathetic to the doctrine, if there is much exegetical basis for it, not just conceptual.  While meditating recently on Tit. 1:2, I was struck by how clearly the doctrine is articulated, if not the term itself. 

Continuing the salutation, Tit. 1:2 says this: "in hope of eternal life, which God, who never lies, promised before the ages began (pro chronon aionion)."  A literalistic, wooden, and nonidiomatic rendering could be something like "before times eternal" or "before times of ages").  Now if this promise was made before the ages (i.e., before creation and time as we know it), to whom was the promise made?  Presumably it was not made to creation, for it did not yet exist.  So then to whom was it made?  Well, to the Son, of course. 

God promised the Son concerning eternal life.  He made a covenant with the Son to redeem fallen humanity, dead in sin, to restore them, and to bestow on them eternal life in the Son.  This is the covenant of redemption, planned and promised in eternity, sealed in the eternal fellowship of the Trinity, sealed by the blood of the Lamb slain before the foundation of the world.  God decreed these things "before the ages for our glory" (1 Cor. 2:7).  And it is indeed marvelous in our eyes!