Treasury of Scripture Knowledge

Summary

Neither shalt thou swear by thy head, because thou canst not make one hair white or black.

General references

Bible References

Shalt

Matthew 23:16
“Woe to you, blind guides, who say, ‘Whoever swears [an oath] by the sanctuary of the temple, that is nothing (non-binding); but whoever swears [an oath] by the gold of the temple is obligated [as a debtor to fulfill his vow and keep his promise].’

Because

Matthew 6:27
And who of you by worrying can add one hour to [the length of] his life?
Luke 12:25
And which of you by worrying can add one hour to his life’s span?

General references

Luke 12:25
And which of you by worrying can add one hour to his life’s span?