Believers are in Jesus, and He is in them

Scripture reference

John 15:1–17 (ASV)

I am the true vine, and my Father is the husbandman. 2Every branch in me that beareth not fruit, he taketh it away: and every branch that beareth fruit, he cleanseth it, that it may bear more fruit. 3Already ye are clean because of the word which I have spoken unto you. 4Abide in me, and I in you. As the branch cannot bear fruit of itself, except it abide in the vine; so neither can ye, except ye abide in me. 5I am the vine, ye are the branches: He that abideth in me, and I in him, the same beareth much fruit:...

Stories

The health of his wife put Abel in a distressful situation. Through prayer and being rooted in Christ that he found peace. In the end, he praised God for keeping to His word.
Kelly Monroe came to a wonderful practical realization of what it means to be a grafted in the Vine, which is Jesus. His body was healed from a disease; even the doctors called his healing a Miracle.
When Hudson Taylor understood the revelation that he was just a branch and the Lord was the Vine, his whole lifestyle changed for the better. He came upon a new experience of peaceful existence that shone brightly everywhere and in everything he did.
Hudson Taylor wrote to his sister about the abundant joy and peace that had replaced the great distress and restlessness that had burdened him for months because of a growing consciousness of his own sin and his powerlessness against it. When he found that Jesus had promised to never leave him and that he was literally a member of Christ's body, he was able to conclude, “Can Christ be rich and I poor?”
The Lord taught Rees Howell how to abide in Him. Ultimately, his abiding bore the fruit of winning a woman for Christ.
A manager who boasted that he had never been on his knees in prayer was brought to repentance before the Lord after Rees Howell and his friends prayed for him. The testimony of Rees's obedience to the Lord was a pivot in his conversion.
When an Indian companion shared his struggles to win souls to Christ, Corrie Ten Boom shared the story of her encounter with a University Professor. A story that demonstrates how dependence on God is more important than eloquence in winning souls for Christ.