…but ourselves also, which have the firstfruits of the Spirit, even we ourselves groan within ourselves, waiting for the adoption, to wit, the redemption of our body. – Romans 8:23

Brethren, the work of the Spirit is called “first-fruits,” because the first-fruits were not the harvest. No Jew was ever content with the first-fruits. He was content with them for what they were, but the first-fruits enlarged his desires for the harvest. If he had taken the first-fruits home, and said, “I have all I want,” and had rested satisfied month after month, he would have given proof of madness, for the first-fruit does but whet the appetite-does but stir up the desire it never was meant to satisfy. So, when we get the first works of the Spirit of God, we are not to say, “I have attained, I am already perfect, there is nothing further for me to do, or to desire.” Nay, my brethren, all that the most advanced of God’s people know as yet, should but excite in them an insatiable thirst after more. My brother with great experience, my sister with enlarged acquaintance with Christ, ye have not yet known the harvest, you have only reaped the first handful of corn. Open your mouth wide, and God will fill it! Enlarge thine expectations-seek great things from the God of heaven-and He will give them to thee; but by no means fold thine arms in sloth and sit down upon the bed of carnal security. Forget the steps thou hast already trodden, and reach forward towards that which is before, looking unto Jesus. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0788.cfm