Hebrews 12:14-16

Young's Literal Translation

¹⁴ peace pursue with all, and the separation, apart from which no one shall see the Lord,

¹⁵ looking diligently over lest any one be failing of the grace of God, lest any root of bitterness springing up may give trouble, and through this many may be defiled;

¹⁶ lest any one be a fornicator, or a profane person, as Esau, who in exchange for one morsel of food did sell his birthright,