en_tn/gal/05/14.md

the whole law is fulfilled in one word

The word "word" here is a metonym for a commandment. Possible meanings are 1) "you can state the whole law in just one commandment, which is this" or 2) "by obeying one commandment, you obey all the commandments, and that one commandment is this." (See: rc://en/ta/man/jit/figs-metonymy)

You must love your neighbor as yourself

The words "you," "your," and "yourself" are all singular. (See: rc://en/ta/man/jit/figs-you)