Philippians 2:12
So, my dearly loved friends, as you have always been obedient, so now with reverence and awe keep on working clear down to the finishing point of your salvation not only as though I were with you but much more because I am away;
Hebrews 4:1-2
So let us fear that when the promise for us to be admitted to His rest is still remaining valid some one of you may be found to have missed it.
Hebrews 12:25
See to it that you do not refuse to listen to Him who is speaking to you. For if they did not escape, because they refused to listen to him who warned them here on earth, how much less can we, if we reject Him who is from heaven?
Hebrews 12:28-29
Let us, therefore, be thankful for receiving a kingdom that cannot be shaken, and in this way continue to serve God acceptably in reverence and fear;