Oh I'm glad you bring up Fruit as this is a very fine biblical reference.
16 If the part of the dough offered as firstfruits is holy, then the whole batch is holy; if the root is holy, so are the branches
Who is the root? Jesus
1 Corinthians 15:20
20 But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep
Jesus..
James 1:18
18 He chose to give us birth through the word of truth, that we might be a kind of firstfruits of all he created
Jesus ..
1 Corinthians 15:23
23 But each in turn: Christ, the firstfruits; then, when he comes, those who belong to him
Belong to who?
Hebrews 13:15 Through Jesus, therefore, let us continually offer to God a sacrifice of praise—the fruit of lips that openly profess his name.
Profess whose name?
John 15:16
16 You did not choose me, but I chose you and appointed you so that you might go and bear fruit—fruit that will last—and so that whatever you ask in my name the Father will give you.
Whose name?
Romans 7:4-5
4 So, my brothers and sisters, you also died to the law through the body of Christ, that you might belong to another, to him who was raised from the dead, in order that we might bear fruit for God.
5 For when we were in the realm of the flesh, the sinful passions aroused by the law were at work in us, so that we bore fruit for death
Belong to who?
And the scripture you are manhandling
John 15:1-7
The Vine and the Branches
1 “I am the true vine, and my Father is the gardener
Jesus is the vine
2 He cuts off every branch in me that bears no fruit, while every branch that does bear fruit he prunes so that it will be even more fruitful.
Jesus is the vine
3 You are already clean because of the word I have spoken to you.
Jesus is the vine and the logos
4 Remain in me, as I also remain in you. No branch can bear fruit by itself; it must remain in the vine. Neither can you bear fruit unless you remain in me.
Jesus is the vine
5 “I am the vine; you are the branches. If you remain in me and I in you, you will bear much fruit; apart from me you can do nothing.
Remain in who?
6 If you do not remain in me, you are like a branch that is thrown away and withers; such branches are picked up, thrown into the fire and burned.
If you don't remain in who?
7 If you remain in me and my words remain in you, ask whatever you wish, and it will be done for you.
There are many more but then I think I made my point