It speaks to men to edification, exhortation, and comfort. We speak to men, not God, when we prophesy. God speaks through us to men. Comfort means to console. If prophecy doesn't lift up, build up or cheer up, it's not prophecy.
Timing is very important when bringing forth a prophecy.
We must be obedient to give forth the prophecy at the proper time. This comes with much practice and sensitivity to the Holy Spirit. Despise not prophecies. If we hold back the prophetic word of the Lord and we are not obedient to bring it forth to the body, we are quenching the Spirit of God. We must not hold back the word of the Lord.