Philippians 2:12
And so, my beloved, as you always obeyed, not in my presence only, but now much more in my absence, work out your salvation with fear and trembling;
Hebrews 4:1-2
Let us fear, therefore, lest at any time a promise being left us of entering into his rest, any one of you should seem to come short.
Hebrews 12:25
See that you refuse not him that speaks; for if they did not escape who refused him that gave answers on earth, much more shall we [not escape] who turn ourselves away from him in heaven;
Hebrews 12:28-29
Wherefore, receiving a kingdom that cannot be shaken, let us have grace through which we may serve God acceptably, with piety and fear;