Melachim Bais 10:6

6 Then he wrote a sefer (letter) the second time to them, saying, If ye be mine, and if ye will pay heed unto my voice, take ye the rashei anshei bnei adoneichem (the heads of the male children of your master), and come to me to Yizre’el by tomorrow this time. Now the Bnei HaMelech, being seventy persons, were with the Gedolim of the Ir, who were rearing them.

Melachim Bais 10:6 Meaning and Commentary

2 Kings 10:6

Then he wrote a letter the second time to them
Having gained his point by the former:

saying, if ye be mine,
acknowledge yourselves my subjects and servants;

and if ye will hearken to my voice;
obey my commands:

take ye the heads of the men your master's sons;
that is, take off their heads:

and come to me to Jezreel by tomorrow this time
meaning with the heads along with them:

(now the king's sons, being seventy persons, were with the great men of
the city, which brought them up;)
they were in their houses, and under their tuition, and so had an authority over them, and could dispose of them at pleasure; they were not ordinary persons to whose care they were committed, but the principal men of the city.

Melachim Bais 10:6 In-Context

4 But they were exceedingly afraid, and said, Hinei, two melachim [See 2Kgs 9:24, 27] stood not before him; how then shall we stand?

5 And he that was over the Bais (Palace), and he that was over the Ir, the zekenim also, and the omenim (guardians [of the royal family]), sent to Yehu, saying, We are thy avadim, and will do all that thou shalt bid us; we will not appoint any melech; do thou that which is tov in thine eyes.

6 Then he wrote a sefer (letter) the second time to them, saying, If ye be mine, and if ye will pay heed unto my voice, take ye the rashei anshei bnei adoneichem (the heads of the male children of your master), and come to me to Yizre’el by tomorrow this time. Now the Bnei HaMelech, being seventy persons, were with the Gedolim of the Ir, who were rearing them.

7 And it came to pass, when the sefer came to them, that they took the Bnei HaMelech, and slaughtered seventy persons and put their heads in dudim (baskets) and sent him them to Yizre’el.

8 And there came a malach, and told him, saying, They have brought the rashei Bnei HaMelech. And he said, Lay ye them in two tziburim (heaps, piles) at the petach of the sha’ar until the boker.