Matthew 5:36

for thou canst not make one hair of it white or black:

Matthew 6:27

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

Matthew 23:16-21

Wo unto you, ye blind guides, who say, If any one swear by the temple, it is nothing;

Luke 12:25

And which of you by all his thought can add one moment to his life?

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
Wo unto you, ye blind guides, who say, If any one swear by the temple, it is nothing;

Because

Matthew 6:27
And which of you by all his thought can add one cubit to his stature?
Luke 12:25
And which of you by all his thought can add one moment to his life?

General references

Luke 12:25
And which of you by all his thought can add one moment to his life?