Why does "Shalisho" have a Hei at the end?
Radak: It is in place of a Vov. This is like "Ohalo" (Bereishis 9:21).
Why did he tell his chariot driver to carry the body?
Malbim: Yehu was in Chelkas Navos when he shot the arrow at Yehoram, but Yehoram was far away. He needed to bring him to Chelkas Navos to fulfill the Nevu'ah.
Why did he tell Bidkar to carry the body, and Yehu did not carry it himself?
Malbim: Both of us witnessed the Nevu'ah, so we should fulfill it. I killed Achav's son, so you should bring his body to where it must go.
Yehoram was already dead. Why must his body be brought to Navos' field?
Malbim (25-26): It is so the dogs will eat his flesh there, to fulfill "I will pay (punish) you in this field 1 " (verse 26).
The Nevu'ah was said to Achav! Perhaps after his death, Achav knew when dogs ate his son's flesh, and it pained him. (PF) Melachim I, 21:19 said that dogs will lick Achav's blood where they licked Navos'! Abarvenel (Melachim I, 22:1) - Yehu should have killed Achav in Navos's field for dogs to lick his blood there. Since Achav did Teshuvah when he heard the Nevu'ah, it was fulfilled through his son.
What is the meaning of "Rochevim Tzemadim"?
Radak #1: We were together in one chariot.
Radak #2: We were next to each other. This is like "Tzemed Bakar" (they are yoked together, next to each other).
Radak citing Targum Yonasan: We were like one [yoked] pair.
Why does it say "Es Rochevim Tzemadim"?
Radak: "Es" is like "Im"; I was with you, and you were with me.
When did they ride together, and hear
Rashi: It was on the day that Achav killed Navos (Melachim I, 21:13. I.e. Navos was executed due to Izevel's plot, and Achav was pleased with it.)
Who said the Nevu'ah?
Rashi: Hashem said it via Eliyahu.
