NET

9 Again, however, pay very careful attention, lest you forget the things you have seen and disregard them for the rest of your life; instead teach them to your children and grandchildren.

Darby

9 Only take heed to thyself, and keep thy soul diligently, lest thou forget the things that thine eyes have seen (and lest they depart from thy heart all the days of thy life; but thou shalt make them known to thy sons and to thy sons' sons),

KJV

9 Only take heed to thyself, and keep thy soul diligently, lest thou forget the things which thine eyes have seen, and lest they depart from thy heart all the days of thy life: but teach them thy sons, and thy sons' sons;

Strong's

9 Only take heed^H8104 to thyself, and keep^H8104 thy soul^H5315 diligently^H3966, lest thou forget^H7911 the things^H1697 which thine eyes^H5869 have seen^H7200, and lest they depart^H5493 from thy heart^H3824 all the days^H3117 of thy life^H2416: but teach^H3045 them thy sons^H1121, and thy sons^H1121' sons^H1121;