KJV : His flesh <01320> shall be fresher <07375> (8738) than a child's <05290>: he shall return <07725> (8799) to the days <03117> of his youth <05934>: {a child's: Heb. childhood}

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NASB : Let his flesh become fresher than in youth, Let him return to the days of his youthful vigor;

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NASB# : Let his flesh<1320> become<7375> fresher<7375> than<4480> in youth<5290>, Let him return<7725> to the days<3117> of his youthful<5934> vigor<5934>;