“Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that through death he might destroy him that had the power of death, that is, the devil;”
King James Version (KJV)
2:14 Since then these children partake of flesh and blood - Of human nature with all its infirmities. He also in like manner took part of the same; that through his own death he might destroy the tyranny of him that had, by God's permission, the power of death with regard to the ungodly. Death is the devil's servant and serjeant, delivering to him those whom he seizes in sin. That is, the devil - The power was manifest to all; but who exerted it, they saw not.
Heb 2:14 He also himself likewise took part of the same. As these children are all mortal he, though divine, took on our mortality. He did this, that through death he might destroy him that had the power of death. That he might bring to nought the power of him who first brought death on our race, "that is, the devil". It was needful; that he be clothed with mortality in order to die, and needful to die in order to deliver men from the power of sin and give them a glorious hope.