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 by the temple, it is nothing! But whoever swears by the gold of the temple is bound [by his oath].'

Because

Matthew 6:27
And who among you, [by] being anxious, is able to add one hour to his life span?
Luke 12:25
And which of you [by] being anxious is able to add an hour to his life span?

General references

Luke 12:25
And which of you [by] being anxious is able to add an hour to his life span?