The answer is: Make one hair black or white

Matthew 5:36 - Jesus emphasizes the limits of human control over nature. He reminds us that swearing by one's head is futile since we cannot alter our inherent characteristics, such as hair color or quantity. This teaching reflects a broader theme of humility and reliance on God’s sovereignty in our lives.

Isn’t it wild how something as simple as a hair color can unveil some profound insights? The remark Jesus made about hair, whether black or white, touches on our human limitations. While many of us might wish we could magically transform our man's trendy locks or a woman’s signature highlights, the idea here extends beyond a mere hair salon visit; it’s about recognizing the scope of our power (or lack thereof) in the grand scheme of creation.

Think about it: our hair, with all its uniqueness, can serve as a metaphor for life itself. Just like we can't change the literal color of our hair upon a whim, we are also residents in a world with deep mysteries beyond our grasp. It's a gentle nudge towards humility, pushing us to kindle a better reliance on forces greater than ourselves.

For some trivia—did you know that in ancient cultures, hair wielded significant symbolic weight? In many instances, it represented strength, wisdom, or even destiny. Tying back to our gospel's essence, this segment of the Sermon on the Mount
not only challenges vanity but beckons us to trust the providence surrounding our lives.

Moreover, it carries reverberations throughout scripture; consider Psalms or Proverbs that wander into the theme of wisdom, encouraging us to respect the dynamics of creation. So next time you're sitting in a chair at the hairdresser, maybe reflect a little on how wonderfully unpredictable life can be!