Deuteronomy 29:9

9 and ye have kept the words of this covenant, and done them, so that ye cause all that ye do to prosper.

Deuteronomy 29:9 Meaning and Commentary

Deuteronomy 29:9

Keep therefore the words of this covenant, and do them
To do which they were laid under great obligations, through the goodness of God to them, in giving them victory over the two kings, and delivering their countries into their hands, as well as by all the favours bestowed on them in the wilderness, where they were sufficiently supplied with food, drink, and raiment; all which is made use of as a motive and argument to engage them to observe and keep the covenant the Lord made with them:

that ye may prosper in all that ye do:
in all their occupations and businesses of life, in their manufactures and commerce, in the culture of their fields and vineyards, and in whatsoever they were employed in a lawful way; the word used has sometimes, the signification of acting wisely and prudently, as in ( Isaiah 52:13 ) ; hence the Septuagint version is, "that ye may understand all that ye do"; and so the Jerusalem Targum.

Deuteronomy 29:9 In-Context

7 `And ye come in unto this place, and Sihon king of Heshbon -- also Og king of Bashan -- doth come out to meet us, to battle, and we smite them,
8 and take their land, and give it for an inheritance to the Reubenite, and to the Gadite, and to the half of the tribe of Manasseh;
9 and ye have kept the words of this covenant, and done them, so that ye cause all that ye do to prosper.
10 `Ye are standing to-day, all of you, before Jehovah your God -- your heads, your tribes, your elders, and your authorities -- every man of Israel;
11 your infants, your wives, and thy sojourner who [is] in the midst of thy camps, from the hewer of thy wood unto the drawer of thy water --
Young's Literal Translation is in the public domain.