The answer is: He is not fit for the Kingdom of God

Luke 9:62

In Luke 9:62, Jesus offers a vivid lesson on commitment, similar to a farmer's unwavering focus when plowing a field. When the farmer stares away from the furrow he’s creating, the line gets crooked and ineffective. That imagery captures an important truth: to pursue a meaningful life and the values associated with the Kingdom of God, one must be fully devoted and forward-looking. The idea of not looking back often evokes the Exodus story where the Israelites were led out of Egypt but faced doubts about their journey forward, yearning for the past comforts of slavery.

Interestingly, this theme of wholeheartedness resonates with other biblical narratives. For instance, Lot’s wife, who looked back for a moment, turned to a pillar of salt—a potent analogy about the dangers of nostalgia. It’s as if the Scriptures repeatedly remind us that fixating on what lies behind can limit our potential and hamper progress.

Moreover, Hebrews 12:1-2 encourages believers to "run with endurance the race set before us" by fixing our eyes on Jesus. And this sheds light on personal purpose in life. Staying aligned with one's ultimate goals, moving toward hope and renewal, is an essential idea throughout biblical text, emphasizing that the future beckons us with possibilities for growth, improvement, and connection—even when the past can be comforting. So, whatever challenges you might face today, remember, often the best way forward is to focus ahead and keep plowing!