“Saving faith is nothing other than the act of the whole rational soul by which it receives God as the highest end and Christ as the one and only Mediator, for this purpose, that we may be united with Him, and being thus united obtain communion with all His benefits…

The end or fruit of this faith or reception, namely, union and communion with Christ, is contained in that one word ‘adoption,’ since by the reception of Christ we who have been made His brothers are rendered heirs of God and joint heirs with Christ. And in this consists every bit of our blessedness.”

–Petrus Van Mastricht, Theoretical-Practical Theology: Faith in the Triune God, Volume 2, Trans. Todd Rester, Ed. Joel Beeke (Grand Rapids, MI: Reformation Heritage Books, 1698/2019), 2: 5-6.