I am the true vine, and My Father is the vinedresser. 2 Every branch in Me that does not bear fruit He takes away; and every branch that bears fruit He prunes, that it may bear more fruit. 3 You are already clean because of the word which I have spoken to you.
The phrase true vine implies that there are other vines that aren't true. Also keep in mind, in this phrase the word "true" is emphatic: meaning done with emphasis or forcible. Jesus made it very plain that God, His Father was the one that takes care of Him. Why was the King so confident in His Father? Because Christ always kept His Father's principles, laws and commands. Are you aware that once you live by God's Word you will discover your purpose for being here on planet earth? Jesus knew His purpose for being here.
Reading and studying God's Constitution leads to a transformation of one's mindset. It also causes one to have an appetite to seek the Kingdom of God. Every individual that fails to know their purpose is non-productive and in a lot of cases, they become a hindrance to the Kingdom and will be cut off. Remember we are branches to our Source. Our Source is King Jesus. The greater our relationship with Christ, the more effective we become in the world as branches. The fruit that we bear must and will affect others to see the Kingdom in us. Remember what the King stated:
I am the vine, and you are the branches. He who abides in Me and I in him, bears much fruit, for without Me you can do nothing. ~~John 15:5