"and there will not be with him a strange god": There will be none among you who serve idolatry. And thus is it written (Isaiah 27:9) "With this shall Jacob's sin be atoned for … and asherah trees and sun idols shall arise no more."
Variantly: "The L-rd shall lead him alone": I am destined to settle you at peace in the world.
"and there shall not be with him a strange god": There shall be none among you engaging in any kind of commerce whatsoever, (but all shall be free for Torah study). As it is written (Psalms 72:16) "There will be an abundance (pisath) of grain in the land": The wheat will bring forth gluskaoth (delicacies) the fulness of the palm ("pas," as in "pisath") of a hand. (Ibid.) "Its fruit will rustle like (the trees of) Levanon.": The wheat (stalks) will rub against each other and shed their meal on the ground, and you will come and take of it a full palmful, sufficient for your livelihood.