'Edification' in the Bible

But he that prophesieth speaketh unto men to edification, and exhortation, and comfort.

and I wish you all to speak with tongues, and more that ye may prophecy, for greater is he who is prophesying than he who is speaking with tongues, except one may interpret, that the assembly may receive edification.

Thus ye also, since ye are desirous of spirits, seek that ye may abound for the edification of the assembly.

What then is the conclusion, brothers? Whenever you come together, each one has a psalm, a teaching, a revelation, another language, or an interpretation. All things must be done for edification.