Hebrews 11:4

11:4 By faith Abel offered God a greater sacrifice than Cain, and through his faith he was commended as righteous, because God commended him for his offerings. And through his faith he still speaks, though he is dead.

Hebrews 12:23

12:23 and congregation of the firstborn, who are enrolled in heaven, and to God, the judge of all, and to the spirits of the righteous, who have been made perfect,