A Study of Knowledge (epignosis): from Ephesians 4:12-15
We have been studying the word knowledge (epignosis), which is a deep, more intimate and personal knowledge of God than the regular knowledge (gnosis). Here in Ephesians 4:13, MacArthur notes that this knowledge “does not refer to salvation knowledge but to the deep knowledge of Christ that a believer comes to have through prayer, faithful study of His Word, and obedience to His commands.”
Backing up to verse 12, we see that God has given some believers certain gifts: as apostles, prophets and teachers. And we (the body of Christ) can also regard theses special gifted people as our gifts from God, because, as verse 12 indicates, they are for our equipping so that we may be equipped to do the work of ministry, and so that we (the whole body of Christ) may be edified.
Now in verse 13 we see that when we are edified we will come to unity in faith and to having knowledge of the Son of God. Hence, if we want to have this knowledge of Christ that we have been studying, this epignosis, it is up to us to take advantage of the teaching provided to us by those pastors and teachers given to us by God. For they are our gifts from God, in order that we might, together as a body, come to know Him.
Then, as a result of this knowledge of God, verse 13 says that we will become a “perfect man” and come “to the measure of the stature of the fullness of Christ.” This does not mean that we will become sinless; rather it means that we will be more mature, more like Christ. Verses 14-15 indicate that we won’t be any longer deceived and taken in by false teachers. Also, in our maturity, we will become more able to speak out against false teaching in a spirit of love. Therefore, to put it simply, when we come to know Christ, as we faithfully study His Word, pray and are obedient to Him, we will “grow up in all things into Him;” that is, in all areas of life we will be like Him.