NET

2 Bear in mind today that I am not speaking to your children who have not personally experienced the judgments of the Lord your God, which revealed his greatness, strength, and power.

Darby

2 And know ye this day ; for [I speak] not with your children who have not known, and who have not seen the chastisement of Jehovah your God^D1243, his greatness, his powerful hand, and his stretched-out arm,

Darby Bible Notes

God - Or 'know ye this day (for [I speak] not with ... your God) his greatness,' &c.

KJV

2 And know ye this day: for [I speak] not with your children which have not known, and which have not seen the chastisement of the LORD your God, his greatness, his mighty hand, and his stretched out arm,