Yet in this thing ye did not believe the Lord. He signifies that they had been most prejudiced observers of the works of God, since His power, so often experienced and. so thoroughly understood, had not aroused them to confidence in Him. For in the word dvr, dabar, which we have translated thing, he embraces all the proofs whereby God had testified, that in Him alone there was all that was necessary to insure their complete salvation. And this was, so to speak, real or practical doctrine, when God called upon them to trust Him by stretching forth His hand. Still, He accuses them of unbelief with reference to the promise; for, whilst faith is not only prompt and ready in obedience, but invigorates and quickens the whole mall, so the cause of their inertness was that they gave no heed to God who had promised to bestow upon them the land of Canaan, and did not rest upon His covenant. In relation to this also, he says, that God marked out the places and stations where they should pitch their camp, for, unless it had been His design to guide them onwards, this change of places would have been superfluous. It was, therefore, gross supineness not to refer these signs for halting and proceeding to their proper object, since it was equivalent to despising God when He held out His hand to them.

Yet in this thing ye did not believe the Lord your God. That they might go up and possess the land at once, and that he would fight for them, and subdue their enemies under them; or notwithstanding the favours bestowed upon them, and because of them, they did not believe in the Lord their God, and which was a great aggravation of their unbelief, and was the cause of their not entering into the good land, Hebrews 3:19.

Ye did not believe the Lord - So they could not enter in, because of unbelief. It was not any other sin shut them out of Canaan, but their disbelief of that promise, which was typical of gospel grace: to signify that no sin will ruin us but unbelief, which is a sin against the remedy; and therefore without remedy.