Albert Barnes Commentary 1 Corinthians 14:12

"So also ye, since ye are zealous of spiritual [gifts], seek that ye may abound unto the edifying of the church." — 1 Corinthians 14:12 (ASV)

Even so ye. Since you desire spiritual gifts, I urge you to seek to be able to speak in a clear and intelligible manner, so that you may edify the church. This is one of the most valuable endowments of the Spirit, and this should be earnestly desired.

Forasmuch as ye are zealous. Since you earnestly desire (see commentary on 1 Corinthians 12:31).

Spiritual gifts. The endowments conferred by the Holy Spirit (see commentary on 1 Corinthians 12:1).

Seek that ye may excel, etc. Seek that you may be able to convey truth in a clear and plain manner; seek to be distinguished for that. It is one of the most rare and valuable endowments of the Holy Spirit.