Which Gospel contains the passage where Jesus says, “No one who puts his hand to the plow and looks back is fit for service in the kingdom of God”?

Jesus said that putting your hand to the plow and looking back means you are not fit for God’s kingdom. This appears only in Luke’s Gospel.

When plowing fields, farmers must look forward to make straight rows. Looking back creates crooked lines and ruins the work.

Jesus used this farming image to teach that following Him requires full commitment, not half-hearted devotion.