Deuteronomy 4:9

9 `Only, take heed to thyself, and watch thy soul exceedingly, lest thou forget the things which thine eyes have seen, and lest they turn aside from thy heart, all days of thy life; and thou hast made them known to thy sons, and to thy sons' sons.

Deuteronomy 4:9 Meaning and Commentary

Deuteronomy 4:9

Only take heed to thyself
To walk according to this law, and not swerve from it:

and keep thy soul diligently;
from the transgressions and breaches of it:

lest thou forget the things which thine eyes have seen;
either the statutes and judgments set before them, and the circumstances of the delivery of them; or the punishment inflicted on the breakers of them; or the favours bestowed on those that observed them:

and lest they depart from thy heart all the days of thy life;
out of thy mind and memory, and have no place in thy affections, through a neglect and disuse of them:

but teach them thy sons, and thy sons' sons;
their children and grandchildren, that they may be trained up in them in their youth, and so not depart from them when grown up, and in years; see ( Deuteronomy 6:7 ) .

Deuteronomy 4:9 In-Context

7 `For which [is] the great nation that hath God near unto it, as Jehovah our God, in all we have called unto him?
8 and which [is] the great nation which hath righteous statutes and judgments according to all this law which I am setting before you to-day?
9 `Only, take heed to thyself, and watch thy soul exceedingly, lest thou forget the things which thine eyes have seen, and lest they turn aside from thy heart, all days of thy life; and thou hast made them known to thy sons, and to thy sons' sons.
10 `The day when thou hast stood before Jehovah thy God in Horeb -- in Jehovah's saying unto me, Assemble to Me the people, and I cause them to hear My words, so that they learn to fear Me all the days that they are alive on the ground, and their sons they teach; --
11 and ye draw near and stand under the mountain, and the mountain is burning with fire unto the heart of the heavens -- darkness, cloud, yea, thick darkness:
Young's Literal Translation is in the public domain.