Prophesying and Speaking in Unknown Tongues

I Corinthians 14:1-5

1  Follow after charity, and desire spiritual gifts, but rather that ye may prophesy. 
2  For he that speaketh in an unknown tongue speaketh not unto men, but unto God: for no man understandeth him; howbeit in the spirit he speaketh mysteries. 
3  But he that prophesieth speaketh unto men to edification, and exhortation, and comfort. 
4  He that speaketh in an unknown tongue edifieth himself; but he that prophesieth edifieth the church. 
5  I would that ye all spake with tongues, but rather that ye prophesied: for greater is he that prophesieth than he that speaketh with tongues, except he interpret, that the church may receive edifying.