en_tn/mat/18/18.md

I tell you truly

"I tell you the truth." This adds emphasis to what Jesus says next.

you

All occurrences of this word are plural. (See: rc://en/ta/man/jit/figs-you)

whatever things you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven

Here "bind" is a metaphor meaning to forbid something, and "loose" is a metaphor meaning to allow something. Also, "in heaven" is a metonym that represents God himself. See how you translated similar phrases in Matthew 16:19. Alternate translation: "God in heaven will bind whatever you bind on earth and loose whatever you loose" or "God in heaven will approve whatever you forbid or allow on earth" (See: rc://en/ta/man/jit/figs-metaphor and rc://en/ta/man/jit/figs-metonymy)