Life for a life

"The thief does not come except to steal, and to kill, and to destroy. I have come that they may have life, and that they may have it more abundantly." John 10.10

The Divine will in relation to life is quite clear. But why not all those who believe in Him have life, much less abundance of it? Because they have not given their lives to Him. They've given Him their life in theory but not in practice.