Matthew 5:36

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

Matthew 6:27

Which of you by anxious care can add one cubit to his stature?

Matthew 23:16-21

Woe to you, ye blind guides, who say, Whoever shall swear by the temple, it is nothing; but whoever shall swear by the gold of the temple, he is a debtor.

Luke 12:25

And which of you by solicitude can add to his stature one cubit?

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, ye blind guides, who say, Whoever shall swear by the temple, it is nothing; but whoever shall swear by the gold of the temple, he is a debtor.

Because

Matthew 6:27
Which of you by anxious care can add one cubit to his stature?
Luke 12:25
And which of you by solicitude can add to his stature one cubit?

General references

Luke 12:25
And which of you by solicitude can add to his stature one cubit?