straight and narrow, the

the straight and narrow

A morally upright way of life. I need to stay on the straight and narrow so I don't get arrested again.
See also: and, narrow, straight
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

straight and narrow, the

The honest and upright way of living, as in He led a wild life when he was young, but he's been on the straight and narrow for some years . This expression is widely though to come from confusion of straight, "not crooked," with strait, "narrow," owing to a misinterpretation of a passage from the New Testament: "Strait is the gate, and narrow is the way, which leadeth unto life" (Matthew 7:14). The current phrase dates only from the first half of the 1800s.
See also: and, straight
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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