Hebrews 12:15

12:15 See to it that no one comes short of the grace of God, that no one be like a bitter root springing up ¹  and causing trouble, and through him many become defiled.

Hebrews 12:28

12:28 So since we are receiving an unshakable kingdom, let us give thanks, and through this let us offer worship pleasing to God in devotion and awe.

[12:15]  ¹ tn Grk “that there not be any root of bitterness,” but referring figuratively to a person who causes trouble (as in Deut 29:17 [LXX] from which this is quoted).