Isaiah 51:14 (b) This is typical of any Christian who is a slave to any form of evil or uncleanness. (See also Isaiah 52:2).
Luke 4:18 (b) Here is a type of those who are bound by Satan in false doctrines, false beliefs and evil practices. (See also Isaiah 61:1).
Ephesians 4:8 (a) These captives are the Old Testament believers who took advantage of the sacrifices, were protected by the blood of those offerings, but were held in paradise as captives until the Blood of the Lord JESUS would blot out their sins. Immediately after Calvary, CHRIST went down to paradise and took all of these Old Testament believers up to Heaven to be with GOD. The blood of bulls and of goats covered their sins, but it took the Blood of JESUS CHRIST to blot out their sins.
2 Timothy 3:6 (b) This name is given to those who are held in bondage by Satan as they listened to false teachers who lead them into false faiths.