People who get THE Mark (it's not the "jab" but the "jab" is a type and you will not be looked at very favorably by God if you take it and may end up shortening your life span against The Will of God and may be damned as a result, if you took it you had better repent of this immediately and reject any further ones) will not be given the Grace for repentance. This is taught by The Early Church Fathers and The Church in general and in particular is taught in Scripture (Apoc. 14 9-11.)
(9) And the third angel followed them, saying with a loud voice: If any man shall adore the beast and his image, and receive his character in his forehead, or in his hand; (10) He also shall drink of the wine of the wrath of God, which is mingled with pure wine in the cup of his wrath, and shall be tormented with fire and brimstone in the sight of the holy angels, and in the sight of the Lamb. (11) And the smoke of their torments shall ascend up for ever and ever: neither have they rest day nor night, who have adored the beast, and his image, and whoever receiveth the character of his name.
Whoever is touting this 90 day thing is not taught anywhere by The Church.
Whoever takes THE Mark will know exactly what it is and that they will be serving The Antichrist and denying Christ and due to this will be cursed by God and not given the Grace to repent. They will viciously hate Christians and Christianity.