Jesus replied, "No one who puts a hand to the plow and looks back is fit for service in the kingdom of God."
Luke 9:62 NIV
He cuts off every branch in me that bears no fruit, while every branch that does bear fruit he prunes[a] so that it will be even more fruitful.
John 15:2 NIV
11Not that I am implying that I was in any personal want, for I have learned how to be [a] content (satisfied to the point where I am not disturbed or disquieted) in whatever state I am. 12I know how to be abased and live humbly in straitened circumstances, and I know also how to enjoy plenty and live in abundance. I have learned in any and all circumstances the secret of facing every situation, whether well-fed or going hungry, having a sufficiency and enough to spare or going without and being in want.
13I have strength for all things in Christ Who empowers me [I am ready for anything and equal to anything through Him Who [b]infuses inner strength into me; I am [c]self-sufficient in Christ's sufficiency].
Philippians 4:11-13 AMP