en_tn/ezk/20/05.md

I ... raised my hand to swear an oath

Here "raised my hand" is a symbolic action that shows he will truly do what he has sworn to do. Alternate translation: "I ... solemnly swore an oath" (See: rc://en/ta/man/translate/translate-symaction)

the house of Jacob

The word "house" is a metonym for the family that lives in the house, in this case the descendants of Jacob over many years. Translate "the house of" as in Ezekiel 3:1. Alternate translation: "the descendants of Jacob" (See: rc://en/ta/man/translate/figs-metonymy)