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 that you are! you say, 'Swear by the sanctuary, and it means nothing; but swear by the gold of the sanctuary, and the oath is binding.'

Because

Matthew 6:27
Which of you can add an ell to his height by troubling about it?
Luke 12:25
Which of you can add an ell to his height by troubling about it?

General references

Luke 12:25
Which of you can add an ell to his height by troubling about it?