Luke 9:62
Jesus said to him: No one that puts his hand to the plow, and looks back, is fit for the kingdom of God.
Acts 15:37-38
And Barnabas determined to take with him John, whose surname was Mark.
Philippians 3:13
Brethren, I do not conclude that I have already laid hold:
Hebrews 10:38
But the just by faith shall live; and if he draw back, my soul will have no pleasure in him.
Luke 17:31-32
In that day, let not him that is on the house-top, and whose goods are in the house, come down to take them away. Likewise, he that is in the field, let him not turn back.
2 Timothy 4:10
for Demas has forsaken me, having loved the present age; and he has gone to Thessalonica, Crescens to Galatia, Titus to Dalmatia.
James 1:6-8
But let him ask in faith, doubting not: for he that doubts, is like a wave of the sea, driven by the wind, and tossed.
2 Peter 2:20-22
For if, after they have escaped the pollutions of the world, through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in these, and overcome by them, the last state of such is worse than the first.