Deuteronomy 6:15

“For the Lord thy God is a jealous God among you, etc.] He was near to them, in the midst of them, his tabernacle being placed between their camps; and was a God jealous of his honour and glory in matters of worship, and would resent any affront given him in that way: lest the anger of the Lord thy God be kindled against thee; there being nothing more apt to stir up his wrath than idolatry: and destroy thee from off the face of the earth; suffer them to be carried captive out of their own land, and to be scattered among the nations of the world, and be utterly destroyed.”

“The Israelites were at the point of quitting a normal, life for a fixed and settled abode in the midst of other nations; they were exchanging a condition of comparative poverty for great and goodly cities, houses and vineyards. There was therefore before them a double danger; (1) a God-forgetting worldliness, and (2) a false tolerance of the idolatries practiced by those about to become their neighbors. The former error Moses strives to guard against in the verses before us; the latter in Deuteronomy 7:1-11. Deuteronomy 6:13 The command “to swear by His Name” is not inconsistent with the Lord’s injunction Matthew 5:34, “Swear not at all.” Moses refers to legal swearing, our Lord to swearing…”

“Among you - Heb. In the midst of you, to see and observe all your ways and your turnings aside to other Gods. Deuteronomy 6:16”

“is a jealous: Deu 4:24; Exo 20:5; Amo 3:2; Co1 10:22 lest: Deu 7:4, Deu 11:17; Num 32:10-15; Ch2 36:16; Psa 90:7, Psa 90:11 destroy: Gen 7:4; Exo 32:12; Kg1 13:34; Amo 9:8 Deuteronomy 6:16”