The New Testament teaches us that in eternity God decreed to sanctify his elect in Christ. It further teaches us that the elect were sanctified in the death and resurrection of Christ. It also teaches us that the moment the elect sinner trusts Christ he is perfectly sanctified. In addition, it teaches us that the converted sinner (the believer) must live a sanctified life to the glory of God. Finally, it teaches us
that at the return of Christ the believer will be absolutely sanctified.
POSITIONAL SANCTIFICATION - David H.J. Gay 2015-09-07
Many Christians, alas, go badly astray over the question of assurance.