John Calvin Commentary Luke 9:62

"But Jesus said unto him, No man, having put his hand to the plow, and looking back, is fit for the kingdom of God." — Luke 9:62 (ASV)

He who, after having put his hand to the plough, shall look back, is unfit for the kingdom of God. We must carefully inquire what this declaration of Christ means. They are said to look back, who become involved in the cares of the world, so as to allow themselves to be withdrawn from the right path; particularly, when they plunge themselves into those employments which disqualify them from following Christ.