# walk after other gods

Walking is a metaphor for obeying. Alternate translation: "serve other gods" (See: [[rc://en/ta/man/translate/figs-metaphor]])

# against you ... you will

These instances of "you" are plural. (See: [[rc://en/ta/man/translate/figs-you]])

# I testify against you

"I warn you" or "I tell you in front of witnesses"

# you will surely perish

"you will certainly die"