Matthew 5:36

Neither shouldst thou swear by thy head, for thou cant not make one hair white or black.

Matthew 6:27

Which of you, being anxious, can add one cubit to his size?

Matthew 23:16-21

Woe to you blind guides, saying, Whoever should swear by the temple, it is nothing; but whoever should swear by the gold of the temple, he is indebted!

Luke 12:25

And which of you having anxiety can add to his size 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 blind guides, saying, Whoever should swear by the temple, it is nothing; but whoever should swear by the gold of the temple, he is indebted!

Because

Matthew 6:27
Which of you, being anxious, can add one cubit to his size?
Luke 12:25
And which of you having anxiety can add to his size one cubit?

General references

Luke 12:25
And which of you having anxiety can add to his size one cubit?