The implied information is that they became friends because Herod appreciated Pilate allowing him to judge Jesus. Alternate translation: "Herod and Pilate became friends with each other that very day because Pilate had sent Jesus to Herod for judgment" (See: [[rc://en/ta/man/translate/figs-explicit]])
# before this they had been enemies with each other
This information is enclosed in parentheses to show that it is background information. Use a format that your audience would understand. (See: [[rc://en/ta/man/translate/writing-background]])