Jewish Publication Society of America Version (JPS1917) - Isaiah 26:3 >

The mind stayed on Thee Thou keepest in perfect peace; because it trusteth in Thee.

King James Version (KJV) - Isaiah 26:3 >

Thou wilt keep [him] in perfect peace, [whose] mind [is] stayed [on thee:] because he trusteth in thee.

Berean Study Bible (BSB) - Isaiah 26:3 >

You will keep in perfect peace the steadfast of mind, because he trusts in You.