To facilitate God’s family becoming “one of” the people in the world, Jesus became “in” us. Jesus moves into the core of our being – becoming “one of” us in a higher, greater, more far reaching way that we could ever conceive.
Because Jesus moves into the core of our being, he affects our lives at the lowest, most basic level possible. Which then flows through the rest of our lives. So, writers compare it to a change in the person’s DNA.
DNA controls the manufacture of the necessary chemicals and molecules needed for growth, repair and maintenance of the body. If the DNA is changed, what is manufactured changes too. The body becomes different.
Jesus in our hearts does not affect the DNA in our bodies. It does affect the “DNA” in our hearts, souls and spirits. Our bodies stay the same, but we become different people. We speak differently. We act differently. We think differently. We become more in tune with God. We become aware of his standards, his desires and his practices. Our desires change to mirror his. Our behavior changes to mirror his. Because we mirror Jesus, people can see God in us … a little bit anyway. And maybe, over time, they can see him a little bit more, and a little bit more.