Charles Spurgeon Commentary 1 Corinthians 1:9-10

"God is faithful, through whom ye were called into the fellowship of his Son Jesus Christ our Lord. Now I beseech you, brethren, through the name of our Lord Jesus Christ, that ye all speak the same thing and [that] there be no divisions among you; but [that] ye be perfected together in the same mind and in the same judgment." — 1 Corinthians 1:9-10 (ASV)

By whom you were called unto the fellowship of his Son Jesus Christ our Lord. Now I beseech you, brethren, by the name of our Lord Jesus Christ, that you all speak the same thing, and that there be no divisions among you; but that you be perfectly joined together in the same mind and in the same judgment.

Where it is not so, the life of piety seems to ooze away. The blessing of God cannot rest upon a church unless we dwell together in unity, and for unity it is necessary that we be perfectly joined together in the same mind and in the same judgment.