Adam Clarke Bible Commentary

And burnt them there - It has been denied that the Hebrews burnt the bodies of the dead, but that they buried them in the earth, or embalmed them, and often burnt spices around them, etc. These no doubt were the common forms of sepulture, but neither of these could be conveniently practiced in the present case. They could not have buried them about Beth-shan without being discovered; and as to embalming, that was most likely out of all question, as doubtless the bodies were now too putrid to bear it. They therefore burnt them, because there was no other way of disposing of them at that time so as to do them honor; and the bones and ashes they collected, and buried under a tree or in a grove at Jabesh.