What is the meaning of Deuteronomy 8:18?

But thou shalt remember the LORD thy God: for [it is] he that giveth thee power to get wealth, that he may establish his covenant which he sware unto thy fathers, as [it is] this day. (Deuteronomy 8:18 – King James Version)

But thou shalt remember Jehovah thy God, for it is he that giveth thee power to get wealth; that he may establish his covenant which he sware unto thy fathers, as at this day. (Deuteronomy 8:18 – American Standard Version)

But thou shalt remember Jehovah thy God, that it is he who giveth thee power to get wealth, that he may establish his covenant which he swore unto thy fathers, as it is this day. (Deuteronomy 8:18 – Darby’s Translation)

And thou hast remembered Jehovah thy God, for He it [is] who is giving to thee power to make wealth, in order to establish His covenant which He hath sworn to thy fathers as [at] this day. (Deuteronomy 8:18 – Young’s Literal Translation)

But you shall remember Yahweh your God, for it is he who gives you power to get wealth; that he may establish his covenant which he swore to your fathers, as at this day. (Deuteronomy 8:18 – World English Bible)

Interlinear

But thou shalt remember <zakar> the LORD <Y@hovah> thy God: <‘elohiym> for it is he that giveth <nathan> thee power <koach> to get <`asah> wealth, <chayil> that he may establish <quwm> his covenant <b@riyth> which he sware <shaba> unto thy fathers, <‘ab> as it is this day. <yowm> (Deuteronomy 8:18 KJV)

Adam Clarke’s Commentary

Verse 18.   God-giveth thee power to get wealth]  Who among the rich and wealthy believes this saying?  Who gives wisdom, understanding, skill, bodily strength, and health?  Is it not God? And without these, how can wealth be acquired?  Whose is providence?  Who gives fertility to the earth?  And who brings every proper purpose to a right issue?  Is it not God?  And without these also can wealth be acquired?  No.  Then the proposition in the text is self-evident: it is God that giveth power to get wealth, and to God the wealthy man must account for the manner in which he has expended the riches which God hath given him.

Patrick/Lowth/Whitby/Lowman Commentary

Remember the Lord thy God: for it is he that giveth thee power to get wealth, Continually call to mind that they owed all they had, and the increase of it, to his almighty providence; without whom they could never have gotten possession of this land, nor have prospered in it.

That he may establish his covenant, &c. He would have them sensible of their own unworthiness also (which would make them more grateful to him) of all the blessings God had bestowed on them, and acknowledge them to his mere goodness, and fidelity to his promises; for they had been a murmuring and rebellious people.