Interesting that Paul said the dispensation of grace had been given to him for the Gentiles. If you can't see the different way God deals with man after pentecost I suggest some study of scripture rather than the teachings of the prophet of the enemy.
1 Timothy 1:6-11 ESV
Certain persons, by swerving from these, have wandered away into vain discussion, desiring to be teachers of the law, without understanding either what they are saying or the things about which they make confident assertions. Now we know that the law is good, if one uses it lawfully, understanding this, that the law is not laid down for the just but for the lawless and disobedient, for the ungodly and sinners, for the unholy and profane, for those who strike their fathers and mothers, for murderers, the sexually immoral, men who practice homosexuality, enslavers, liars, perjurers, and whatever else is contrary to sound doctrine, in accordance with the gospel of the glory of the blessed God with which I have been entrusted.
Do you somehow not understand that dispensationalism is total bunk?
Do you not understand that all men are saved by the same grace? - Have you ever read Hebrews chapters 3 and 4?
.