Hebrews 10:31

10:31 It is a terrifying thing to fall into the hands of the living God.

Hebrews 12:22

12:22 But you have come to Mount Zion, the city of the living God, the heavenly Jerusalem, and to myriads of angels, to the assembly

Hebrews 3:12

3:12 See to it, brothers and sisters, that none of you has an evil, unbelieving heart that forsakes the living God.