Isaiah 26:3

A stricter rendering might be: A steadfast disposition thou guardest in constant peace (lit. "peace, peace"), for it is trustful towards thee (see R.V. marg.). The word for "disposition" is elsewhere translated "imagination" (e.g. Genesis 6:5; Genesis 8:21). Literally it means a "thing formed" (as in ch. Isaiah 29:16), and thus may be used tropically either of that which is formed by the mind (imagination) or (as here) of the constitution of the mind itself, the inclination or character.