Christ is in you by faith. That means you have new life, the life of Christ. You can truly say, "Christ lives in me, and the life which I now live in the flesh I live by faith of the Son of God, who loved me and gave Himself for me" (Galatians 2:20).
Christ is in you through the Holy Spirit, also known as the Spirit of Christ. His presence is experienced through faith, hope, and love. These are the three abiding gifts of the Holy Spirit. "And now abide faith, hope, love, these three; but the greatest of these is love" (1 Corinthians 13:13).
The Spirit of Christ is in you through three abiding gifts. Faith is in your heart to trust Christ as your living Lord and Savior. Hope is given to trust Christ with your future. Most importantly, the love of Christ is in you. The love of Christ enables you to love God and others.
The Spirit of Christ is in all believers (Romans 8:9). Christ is in your life by faith. Christ is in you with hope that the world didn't give you, and the world can't take it away. Most importantly, the love of Christ is in you, bringing peace and joy. The Holy Spirit is the witness of Christ in you, through faith, hope, and love.