'Add' in the Bible

Ye shall not add to the word which I command you, neither shall ye take from it, that ye may keep the commandments of Jehovah your God which I command you.

Everything that I command you, ye shall take heed to do it; thou shalt not add thereto, nor take from it.

(if thou keep all this commandment to do it, which I command thee this day, to love Jehovah thy God, and to walk in his ways continually), then shalt thou add three cities more for thyself to these three,