“I am the vine, 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

“I am the vine, ye are the branches,” is the word of Christ to His disciples. There is a living union between Christ and His people; and I hope that I can appeal to the experience of many here present who know that there is a living union between them and Christ. Happy is the man who can say, “I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave Himself for me”!

The union is even more than a union of life; it is a union of derived life. The branch is in such union with the stem that it receives all its sap from it; it could not live unless the living juices flowed from the stem into it. And such is our life. Christ pours His lifeblood into us. Perpetually, as long as He exists, He seems to be oozing out into His people. In fact, when His wounds were open, He bled life into us; and when His heart was burst, He changed our hearts, and gave them life, though they once were hearts of stone. We are so one with Christ, that we at first received our life from Him, and we continue to receive it from Him every moment.

In consequence of the life of Christ in us, we grow. The growing of the branch is really the growing of the vine. It is because the stem grows that it sends its growth into the branch, and manifests it there. As Christ pours His life-force into us, He makes us grow, to the praise of the glory of His grace. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/2244.cfm