'Up building' in the Bible

But the person who prophesies speaks to people for their upbuilding, encouragement, and comfort.

Howbeit I wish you all to speak with tongues, but, rather, that ye may prophesy, - moreover, greater, is he that prophesieth, than he that speaketh with tongues, - unless indeed he translate, that, the assembly, may receive upbuilding.

So, ye, also - since ye are, envious, of spirits, unto the upbuilding of the assembly, seek to be pre-eminent.

What, then, does this mean, brothers? When you gather, everyone has a psalm, teaching, revelation, foreign language, or interpretation. Everything must be done for upbuilding.