2 Timothy 4:2 Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine.
Mark 4:26-28 And he said, So is the kingdom of God, as if a man should cast seed into the ground; And should sleep, and rise night and day, and the seed should spring and grow up, he knoweth not how. For the earth bringeth forth fruit of herself; first the blade, then the ear, after that the full corn in the ear.
John Wesley’s Notes:
So is the kingdom of God-The inward kingdom is like seed which a man casts into the ground – This a preacher of the Gospel casts into the heart. And he sleeps and rises night and day-That is, he has it continually in his thoughts. Meantime it springs and grows up he knows not how-Even he that sowed it cannot explain how it grows. For as the earth by a curious kind of mechanism, which the greatest philosophers cannot comprehend, does as it were spontaneously bring forth first the blade, then the ear, then the full corn in the ear: so the soul, in an inexplicable manner, brings forth, first weak graces, then stronger, then full holiness: and all this of itself, as a machine, whose spring of motion is within itself. Yet observe the amazing exactness of the comparison. The earth brings forth no corn (as the soul no holiness) without both the care and toil of man, and the benign influence of heaven.
1 Corinthians 3:6-11 I have planted, Apollos watered; but God gave the increase. So then neither is he that planteth any thing, neither he that watereth; but God that giveth the increase. Now he that planteth and he that watereth are one: and every man shall receive his own reward according to his own labour. For we are labourers together with God: ye are God’s husbandry, ye are God’s building. According to the grace of God which is given unto me, as a wise masterbuilder, I have laid the foundation, and another buildeth thereon. But let every man take heed how he buildeth thereupon. For other foundation can no man lay than that is laid, which is Jesus Christ.
See also … SALVATION