In Ephesians 4:13 it states "This will continue until we all come to such unity in our faith and knowledge of God's son that we will be mature in the Lord, measuring up to the full and complete standard of Christ." (NLV)
What is going to continue? The previous verses tell us, it is the giving of apostles, prophets, evangelists, pastors and teachers. These are the gifts of grace given to the Body of Christ in Christ's ascension. These are not given before Jesus ascended, but in his ascension, that is while he is seated at the Father's right hand in heaven.