Luke 9:62
Jesus said to him, "No one who puts his hand to the plow and looks back is fit for the kingdom of God."
Acts 15:37-38
Barnabas wanted to take John, also called Mark, with them.
Philippians 3:13
Brethren, I do not consider myself yet to have taken hold of it; but one thing I do: forgetting what lies behind and straining forward to what lies ahead,
Hebrews 10:38
But my righteous one shall live by faith, and if he shrinks back, my soul has no pleasure in him."
Luke 17:31-32
On that day, let him who is on the housetop, with his goods in the house, not come down to take them away. And likewise let him who is in the field not turn back.
2 Timothy 4:10
for Demas, having loved this present world, has deserted me and gone to Thessalonica. Crescens has gone to Galatia, and Titus to Dalmatia.
James 1:6-8
But he must ask in faith, with no doubting, for he who doubts is like a wave of the sea that is driven and tossed by the wind.
2 Peter 2:20-22
For if, after they have escaped the defilements of the world by the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and are overcome, the last state has become worse for them than the first.