On whose, what man or men's "Scriptural substantiation" that is, do you base your faith?
The authority on which I base my faith is the authority of the Fathers, Doctors, Saints and Martyrs of the One, True, Holy, Catholic and Apostolic Church founded by Jesus Christ.
If the authority you claim is just of your own personal concoction or based on other men's that I have already investigated to some great extent and have personally found wanting then we must agree to disagree however if you can site some other more compelling authority, I might be inclined to look into the source.
For now I will enjoy the peace of Christ safe in the shelter of His loving arms and I pray that you will do the same.