The rabbis discuss death and how it may be escaped. God does not kill humankind. Men die when they walk in the shadow of the Angel of Death. When God's wisdom prevails on Earth, death will vanish forever.
Death is an illusion of this physical world. It helps correct the soul when the accumulation of negativity in the body becomes too great a task to correct in the present lifetime. Negativity is aroused when behavior is rooted in Evil Inclination. When mankind has fully abolished this aspect of his nature, immortality will become the new reality. This can be hastened by a concentrated, meditative connection to the Hebrew texts that distill this wisdom.