Philippians 2:12
Therefore, my dear friends, as you have always been obedient in the past, so now work out your own Salvation with anxious care, not only when I am with you, but all the more now that I am absent.
Hebrews 4:1-2
We must, therefore, be very careful, though there is a promise still standing that we shall enter upon God's Rest, that none of you even appear to have missed it.
Hebrews 12:25
Beware how you refuse to hear him who is speaking. For, if the Israelites did not escape punishment, when they refused to listen to him who taught them on earth the divine will, far worse will it be for us, if we turn away from him who is teaching us from Heaven.
Hebrews 12:28-29
Therefore, let us, who have received a kingdom that cannot be shaken, be thankful, and so offer acceptable worship to God, with awe and reverence.