The condition of continued life in Christ

Hebrews 6:12

so that you may not be sluggish, but imitators of those who through faith and patience inherit the promises.

Hebrews 10:22-23

Let us draw near with a true heart in full assurance of faith, with our hearts sprinkled clean from an evil conscience and our bodies washed with pure water.  Let us hold fast the confession of our hope without wavering, for he who promised is faithful.

Hebrews 10:26-29

For if we go on sinning deliberately after receiving the knowledge of the truth, there no longer remains a sacrifice for sins,  but a fearful expectation of judgment, and a fury of fire that will consume the adversaries.  Anyone who has set aside the law of Moses dies without mercy on the evidence of two or three witnesses.  How much worse punishment, do you think, will be deserved by the one who has trampled underfoot the Son of God, and has profaned the blood of the covenant by which he was sanctified, and has outraged the Spirit of grace?

Hebrews 10:35-39

Therefore do not throw away your confidence, which has a great reward.  For you have need of endurance, so that when you have done the will of God you may receive what is promised.  For,      
“Yet a little while,

and the coming one will come and will not delay;
  but my righteous one shall live by faith,
and if he shrinks back,
my soul has no pleasure in him.”
  But we are not of those who shrink back and are destroyed, but of those who have faith and preserve their souls.

Hebrews 12:4-5

Strive for peace with everyone, and for the holiness without which no one will see the Lord.  See to it that no one fails to obtain the grace of God; that no “root of bitterness” springs up and causes trouble, and by it many become defiled;