Charles Ellicott Commentary 2 Kings 10:7

"And it came to pass, when the letter came to them, that they took the king`s sons, and slew them, even seventy persons, and put their heads in baskets, and sent them unto him to Jezreel." — 2 Kings 10:7 (ASV)

And slew. —Rather, butchered, or slaughtered. The way in which the writer speaks of this massacre—they took the king’s sons, and butchered seventy persons—shows that he did not sympathize with Jehu’s deeds of blood. His interest rather centers in the fact that the predictions of Elijah were fulfilled by the wickedness of Jehu. (See 2 Kings 10:10.)

In baskets. —Rather, in the baskets. The word (dûd) means a “pot” elsewhere (1 Samuel 2:14). In Psalms 81:6, the Septuagint renders κόφινος; here it gives καρτάλλοις (“pointed baskets”).