Verses with the word firstfruits in the New Testament (7 verses):

Romans 8:23
And not only they, 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 16:5
Likewise greet the church that is in their house. Salute my well-beloved Epaenetus, who is the firstfruits of Achaia unto Christ.

1 Corinthians 15:20
But now is Christ risen from the dead, and become the firstfruits of them that slept.

1 Corinthians 15:23
But every man in his own order: Christ the firstfruits; afterward they that are Christ's at his coming.

1 Corinthians 16:15
I beseech you, brethren, (ye know the house of Stephanas, that it is the firstfruits of Achaia, and that they have addicted themselves to the ministry of the saints,)

James 1:18
Of his own will begat he us with the word of truth, that we should be a kind of firstfruits of his creatures.

Revelation 14:4
These are they which were not defiled with women; for they are virgins. These are they which follow the Lamb whithersoever he goeth. These were redeemed from among men, being the firstfruits unto God and to the Lamb.