If God the Father elected and predestinated us, and the Son did all that we needed for salvation on His cross, but we are dead in our sins, then how does anyone actually get saved? We are not spiritually capable of responding to the work the Father and Son have done. Enter the Holy Spirit. If the Father is the Architect of our salvation, and the Son is the Accomplisher of our salvation, it is fair to say that the third member of the Trinity, God the Holy Spirit, is the Applier of that salvation. He regenerates us, that is, He brings us to life and in so doing enables us to respond to the Gospel. Then He stays with us until the day we take possession of the inheritance that is ours.