And Abel also brought of the firstborn of his flock and of their fat portions. And the Lord had regard for Abel and his offering (Gen 4:4).
“Consecrate to me all the firstborn. Whatever is the first to open the womb among the people of Israel, both of man and of beast, is mine” (Ex 13:2).
You shall not delay to offer from the fullness of your harvest and from the outflow of your presses. The firstborn of your sons you shall give to me (Ex 22:29).
The best of the firstfruits of your ground you shall bring into the house of the Lord your God (Ex 23:19).
For all the firstborn are mine. On the day that I struck down all the firstborn in the land of Egypt, I consecrated for my own all the firstborn in Israel, both of man and of beast. They shall be mine: I am the Lord (Num 3:13).
And this shall be the priests’ due from the people, from those offering a sacrifice, whether an ox or a sheep: they shall give to the priest the shoulder and the two cheeks and the stomach. The firstfruits of your grain, of your wine and of your oil, and the first fleece of your sheep, you shall give him. For the Lord your God has chosen him out of all your tribes to stand and minister in the name of the Lord, him and his sons for all time(Dt 18:3-5).
We obligate ourselves to bring the firstfruits of our ground and the firstfruits of all fruit of every tree, year by year, to the house of the Lord (Neh 10:35)
Honor the Lord with your wealth and with the firstfruits of all your produce; then your barns will be filled with plenty, and your vats will be bursting with wine (Pr 3:9-10).
1 Corinthians 15:20
But in fact Christ has been raised from the dead, the firstfruits of those who have fallen asleep (1 Co 15:20).
Of his own will he brought us forth by the word of truth, that we should be a kind of firstfruits of his creatures (James 1:18).