John 6:66-69
Upon [hearing] this, many of Jesus' disciples turned back and refused to accompany Him anymore. [Note: They deserted Jesus physically as well as spiritually].
Ephesians 2:1-5
And you [Gentiles] were once [spiritually] dead because of your shortcomings and sins.
Philippians 2:12-13
So then, my dear ones, just as you people were always obedient [to my teaching] when I was there with you, so now, in my absence [also], be [obedient] all the more. [Continue to] complete your own salvation [i.e., by living faithfully to the end. See Rom. 13:11] with fear and trembling [i.e., with a reverent and submissive spirit],
Hebrews 10:38-39
And my [i.e., God's] righteous person will [obtain] life by [his] faith [in God]. But if he turns back [from me], my soul is not pleased with him."