Jesus tell us that as Christians, we must abide in him, like a branch "abides" in a tree. We take root in him, the Triune God. We hope that as you wear this awesome shirt you abide in the Jesus who saved you.
"Abide in Me, and I in you. As the branch cannot bear fruit of itself unless it abides in the vine, so neither can you unless you abide in Me." - John 15:4