Jonathan Edwards insists that the requirement of perfect obedience is only heightened by Christ’s advent:

The gospel revelation and dispensation is so far from abating or destroying the perfection of the law, and bringing in an imperfect law instead of it, that it vastly increases our obligation to perfect obedience, and that a great many ways: [it] reveals more of God’s worthiness to be obeyed; reveals more of God’s infinite purity, his infinite hatred of sin, more of the hateful dreadful nature and consequences of sin; sets before us the brightest example of most perfect obedience, and that under the most affecting circumstances and the most obliging circumstances, circumstances most strongly obliging to imitation; sets for the law far mor ethan ever in its honorableness and worthiness of regard; lays us under infinitely greater obligations by God’s goodness; reveals with abundantly greater clearness the spirituality of the law; it is a revelation of the spiritual world, ’tis all over spiritual, taking us off, above all foregoing revelation, from looking at things external to look at things spiritual. . . .

No scheme of divinity can be devised or imagined more contrary to the nature, genius and design of the gospel of Christ, than such a scheme as supposes that the strictness of the law is abated, and a law requiring less perfection introduced by Christ, in order to our being justified by our own virtue and obedience. – “Controversies” Notebook on Justification, in Yale-Works 21:340-41 (emphasis added).