For this reason [that is, because of God’s final revelation in His Son Jesus and because of Jesus’ superiority to the angels] we must pay much closer attention than ever to the things that we have heard, so that we do not [in any way] drift away from truth.

Take care, brothers and sisters, that there not be in any one of you a wicked, unbelieving heart [which refuses to trust and rely on the Lord, a heart] that turns away from the living God.

Therefore, while the promise of entering His rest still remains and is freely offered today, let us fear, in case any one of you may seem to come short of reaching it or think he has come too late.