The Heart of the Gospel
October 2025 đź’Ž Diamond

The Heart of the Gospel: Union with Christ

At the center of the Christian faith is not just a set of beliefs or a moral code. It’s not even primarily about what we do for God. At the very heart of the gospel is union with Christ: our life hidden in Him, His life flowing in us.

What Does Union With Christ Mean?

The New Testament constantly describes believers as being in Christ. Paul uses that phrase over 160 times. It’s not just a metaphor. It’s the reality of the Christian life: when we believe in Jesus, the Spirit joins us to Him as we embrace the truth that His story is now our story.

  • His death becomes our death.
  • His resurrection becomes our resurrection.
  • His righteousness becomes our righteousness.
  • His relationship with the Father becomes our relationship with the Father.

As Jesus Himself prayed, “I in them and you in me, that they may become perfectly one” (John 17:23).

Union with Christ isn’t just a doctrine to understand. It’s a reality to experience. This union begins, as it did with Jesus at the Jordan River, in the Father’s voice of love. “You are my beloved Son; with you I am well pleased” (Mark 1:11). Through Christ, that same word is spoken over us.

We are not trying to earn God’s approval. We already have it because we are in His Son. We live as beloved children.

Union with Christ also means our old life no longer defines us. Paul writes, “I have been crucified with Christ. It is no longer I who live, but Christ who lives in me” (Galatians 2:20).

This is more than forgiveness. It is transformation. Jesus didn’t just remove our sins; He gave us His very life. His Spirit now breathes in us. His desires become ours. His strength empowers our weakness.

Living From the Inside Out

This changes how we live. Christianity is not about trying harder. It’s about abiding in the One who already overcame.

  • We don’t strive to love; we let His love flow through us.
  • We don’t try to manufacture peace; we receive His peace as our own.
  • We don’t try to prove ourselves; we rest in the Father’s delight.

Jesus said, “Abide in me, and I in you… apart from me you can do nothing” (John 15:4–5). The branch doesn’t struggle to produce fruit. It simply stays connected to the vine, and the life of the vine produces the fruit.

Because of our union with Christ, we lack absolutely nothing. Go ahead and read that again. And if you need some biblical back-up, here is one truckload of goodness from Ephesians: “We have been blessed with every spiritual blessing in the heavenly places in Christ” (1:3). Ephesians goes on to say that we are already seated with Christ in the heavens (2:6).

Our lives are not about chasing after what we lack, but about awakening to the fullness we already have in Him. 

Why This Matters

This is the great mystery all of us are destined to contend with at some point in our journey. It is the “riddle” behind Elisha’s Riddle. So it’s our passion to declare it, write it, and creatively express it, with the hopes of helping others awaken to this glorious fullness. We do this because we know that a revelation of union with Christ changes everything. 

It changes, first of all, how we see God. He is no longer distant, but closer than our own breath. 

It also changes how we see ourselves. No longer striving or condemned, we are beloved and complete. 

And it changes how we see the world. Every moment becomes an opportunity for the life of Christ within us to overflow into the lives of others!

This is the good news. Not just that Christ died for us, but that Christ now lives in us, and we in Him.

Leave a Comment