"These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life..." (1 John 5:13)
As a Christian, you don't have a combination of the divine life and human life. You don't have two lives, but one-- the divine life. This divine life and nature of God in your spirit has an impact on your physical body. The human life is sustained by blood (Leviticus 17:11). That's the reason why blood diseases are very deadly, because they attack the whole body.
But, when Jesus died on the Cross, something interesting happened. A Roman soldier thrust a spear through His side, and the Bible says "blood and water gushed out." His heart had ruptured, and all His blood drained out. His body was buried without blood, and when He was raised from the dead, the resurrected body of Jesus had no blood.
So, where did the life of the body of Jesus come from? After all, He didn't come back to life as a Ghost, He resurrected in physical flesh. The Bible tells us He was raised from the dead by the glory of the Father-- that's the Holy Spirit! The Holy Spirit overshadowed the dead body of Jesus, gave it strength, and Jesus came back to life, even though his body was without blood!
Now that you're born again, you have the same life with which Jesus was raised from the dead.
"But if the Spirit of Him who raised Jesus from the dead dwells in you, He who raised Christ from the dead will also give life to your mortal bodies through His Spirit who dwells in you."
This has already happened! Your physical body, your previously death-doomed and death-prone body has been rejuvenated, reinvigorated, and vitalized by the Holy Spirit who lives in you.
This is the reason that sickness, for the Christian, is estranged-- it's an anomaly-- it's not supposed to be, because the life in you is divine. Hallelujah! Meditate on this truth, and endorse it in your personal life, and you'll forever live above sickness, disease, defeat, and all the depravities that affect the human nature.
I've got the life of God in me. It's in every fiber of my being, in every cell of my blood, and in every bone of my body. I live above sickness, disease, defeat, and all the depravities that affect the human nature, as a result of the divine life and nature of God in me. Hallelujah!
Further Study: 1 Peter 1:23; 1 John 4:17; 1 John 5:11-13