en_tn/2ki/09/26.md

I will surely make you pay for it

This means that he will punish Ahab as he deserves for the evil he has done. AT: "I will give you what you deserve for the evil you have done" (See: rc://en/ta/man/translate/figs-explicit)

pick him up and throw him on this field

"take Joram's dead body and throw it into the field of Naboth"

according to the word of Yahweh

"to fulfill the prophecy spoken to us"