"Covenant Theology uses the covenant concept as an organizing principle for Christian theology and views the history of redemption under the framework of three overarching theological covenants: the Covenant of Redemption, the Covenant of Works, and the Covenant of Grace. These three are called "theological covenants" because although not explicitly presented as covenants, they are, according to covenant theologians, implicit in the Bible."
Covenant Theology teaches that God has established one theological covenant within the Godhead and then has used two theological covenants with mankind to implement the overarching purpose and plan of the first covenant.
The first covenant, usually called the Covenant of Redemption, is the agreement within the Godhead that the Father would appoint his Son Jesus to give up his life for mankind and that Jesus would do so (cf. Titus 1:1-3).
The above statement from the internet has been edited and paraphrased to improve clarity.
An interesting question arises from Paul's use of "before times eternal" in Titus 1:2 and 2 Timothy 1:9. If Paul did not intend to refer to the times before the ages, i.e. eternity before creation, why did he not say "from the beginning?" At best one could claim Paul was referring to the time before both the New Covenant and the Old Mosaic Covenant, i.e. back to the promises to Abraham, but is that valid?