“Because the Son is consubstantial with the Father, God’s redemptive will cannot be limited to the Father; the Son too must be the agent of God’s redemptive will. Moreover, because the Son eternally proceeds from the Father in his personal manner of subsisting, so too does his personal manner of willing proceed from the Father. The Son’s willing submission to the Father in the pactum salutis is thus a faithful expression of his divine filial identity” (Scott Swain, Christian Dogmatics, 122).
"The will of God as to the peculiar actings of the Father in this matter is the will of the Father,
and the will of God with regard to the peculiar actings of the Son is the will of the Son; not by a
distinction of sundry wills, but by the distinct application of the same will unto its distinct acts
in the persons of the Father and the Son." (John Owen)