We can agree that a baby’s life is bound up with that of one’s mother’s. Yes, there are other helpers or, at times, stand-in’s. But the baby is a largely dependent creature, and in most cases, that weight on mom. So much so, that if something threatens the life of the mother, then the life of the baby is also imperiled. And otherwise, good health for the mom should generally redound to good health for the baby.
For the follower of Jesus, we can also say that the life of the disciple is bound up with the life of Christ. What happens to him happens to his followers, in at least a couple of ways.
This has application for our present lives. Jesus, having been raised from the dead, is ascended to heaven and is at the right hand of the Father, with all enemies placed under his feet. Now not all his (our) enemies have met their final defeat, but the resurrection and ascension show how this is going to go. Therefore, since my life is bound up with his, I need not fear evil. Enemies may not be currently completely vanquished, but they have no enduring power. And even if they are able to bring physical harm or death, my future is secured by the One who lives forevermore.
But spiritually, our lives are bound up with Jesus’ life in another way. Romans 6 in particular shows that we are bound to Jesus in his death, so that our relationship with servitude to sin and evil is broken. And if we are bound to Jesus in his death, then we are also bound to him in his resurrection, so much so that we now live new kinds of lives, fueled by faith, lived out in love, helped along by hope, all energized by the Holy Spirit given from heaven.
If archeologists were able to find and conclusively prove that they had uncovered the body of the 1st century Jesus - if they were able to disprove the resurrection which is so clearly attested and substantiated in Scripture, then real Christianity would die. Sinners would have lost their Savior. There would be no deliverance, and no hope. Since archeologists and historians can prove little conclusively, my statement is not so helpful, other than to illustrate how literally this maxim is intended: my life is bound up with his.
Or is it? If we can go from Sunday to Sunday with no thoughts of Jesus in between, is my life really bound up with his? If I face a trial or disappointment, and do not turn to Jesus for direction or help, is my life really bound up with his? Once again, what we say we believe needs to be put into practice.