‘As the branch cannot bear fruit by itself, unless it abides in the vine, neither can you, unless you abide in me. I am the vine; you are the branches.’  

(John 15:4-5a)

Jesus uses the final hours before his arrest leading to the sham trial and crucifixion, to prepare his disciples for their task.  It will fall to them to cultivate the Gospel, so it may be fruitful.  The word translated ‘fruit’ is καρπὸς karpos is the produce of the mature plant and the means by which it is propagated.