Jn 12:24, 1 Cor 15:20-23, 1 Thess 4:14
In the Old Testament, God had the Israelites bring the first grain to the priests when they went to the land of Canaan to gather grain. This grain symbolizes Christ, the firstfruits of the resurrection. (Lev 23:10)
Lev 23:10 Speak unto the children of Israel, and say unto them, When ye be come into the land which I give unto you, and shall reap the harvest thereof, then ye shall bring a sheaf of the firstfruits of your harvest unto the priest:
Just as a grain of wheat falls to the ground and dies, bearing much fruit, Jesus died to save many lives. (John 12:24)
John 12:24 Verily, verily, I say unto you, Except a corn of wheat fall into the ground and die, it abideth alone: but if it die, it bringeth forth much fruit.
Jesus died for us sinners and rose from the dead to become the first fruits of resurrection. If we believe that Jesus is the Christ, we will be resurrected like Jesus when He comes again. (1 Corinthians 15:20-23; 1 Thessalonians 4:14)
1 Corinthians 15:20 But now is Christ risen from the dead, and become the firstfruits of them that slept. 21 For since by man came death, by man came also the resurrection of the dead. 22 For as in Adam all die, even so in Christ shall all be made alive. 23 But every man in his own order: Christ the firstfruits; afterward they that are Christ's at his coming.
1 Thessalonians 4:14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him.