KJV : Only take heed <08104> (8734) to thyself, and keep <08104> (8798) thy soul <05315> diligently <03966>, lest thou forget <07911> (8799) the things <01697> which thine eyes <05869> have seen <07200> (8804), and lest they depart <05493> (8799) from thy heart <03824> all the days <03117> of thy life <02416>: but teach <03045> (8689) them thy sons <01121>, and thy sons <01121>' sons <01121>;
NASB : "Only give heed to yourself and keep your soul diligently, so that you do not forget the things which your eyes have seen and they do not depart from your heart all the days of your life; but make them known to your sons and your grandsons.
NASB# : "Only<7534> give<8104> heed<8104> to yourself and keep<8104> your soul<5315> diligently<3966>, so<6435> that you do not forget<7911> the things<1697> which<834> your eyes<5869> have seen<7200> and they do not depart<5493> from your heart<3824> all<3605> the days<3117> of your life<2425>; but make<3045> them known<3045> to your sons<1121> and your grandsons<1121>.