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 say, Whoever sweareth by the temple, it is nothing; but whoever sweareth by the gold of the temple, is bound.

Because

Matthew 6:27
But who of you by anxious thought can add to his life one cubit?
Luke 12:25
And who of you can by anxious thought add a cubit to his life?

General references

Luke 12:25
And who of you can by anxious thought add a cubit to his life?