As far as Ephesians 4:8, I like this quote by Gaebelein:
"Each member in the body of Christ has a specific place for a specific work. See Romans 12:4-5 and 1Corinthians 12:4-5. And the bestowal of gifts for service in the body is in His hands. He ascended upon high and triumphed over all enemies. He led captivity captive and gave gifts unto men. He triumphed over the devil, who has the power of death and stripped him of that power. And all who constitute His body share in His triumph. They are no longer under the power of Satan, but delivered from the power of darkness, they are His trophies. “He led captivity captive,” i.e., those who were in captivity, or “a troop, a multitude of captives.” The view held by some that the Old Testament saints are meant, whom He led forth from Hades is incorrect."
[end quote; underline mine]
"Each member in the body of Christ has a specific place for a specific work. See Romans 12:4-5 and 1Corinthians 12:4-5. And the bestowal of gifts for service in the body is in His hands. He ascended upon high and triumphed over all enemies. He led captivity captive and gave gifts unto men. He triumphed over the devil, who has the power of death and stripped him of that power. And all who constitute His body share in His triumph. They are no longer under the power of Satan, but delivered from the power of darkness, they are His trophies. “He led captivity captive,” i.e., those who were in captivity, or “a troop, a multitude of captives.” The view held by some that the Old Testament saints are meant, whom He led forth from Hades is incorrect."
[end quote; underline mine]