Verse 27 Sleep, and rise night and day; that is, as usual,--pursuing his usual avocations, without having upon his mind any care in regard to the vegetation of his seed. Mark 4:28,29. So with the disciples as preachers of the gospel. Their duty would be to sow the seed, and to gather into the churches those in whose hearts the Spirit of God causes it to vegetate. As they cannot by their own power make the word which they preach effectual, they have no responsibility in regard to its reception.