He is the One who gave some the gift to be apostles. He gave some the gift to be prophets. He gave some the gift of preaching the good news. And he gave some the gift to be pastors and teachers.
He did it so that they might prepare God's people to serve. If they do, the body of Christ will be built up.
That will continue until we all become one in the faith and in the knowledge of God's Son. Then we will be grown up in the faith. We will receive everything that Christ has for us.
We will no longer be babies in the faith. We won't be like ships tossed around by the waves. We won't be blown here and there by every new teaching. We won't be blown around by the cleverness and tricks of people who try to hide their evil plans.
Instead, we will speak the truth in love. We will grow up into Christ in every way. He is the Head.
He makes the whole body grow and build itself up in love. Under the control of Christ, each part of the body does its work. It supports the other parts. In that way, the body is joined and held together.
Here is what I'm telling you. I am speaking for the Lord as I warn you. You must no longer live like those who aren't Jews. Their thoughts don't have any purpose.
References for Ephesians 4:17
They can't understand the truth. They are separated from the life of God. That is because they don't know him. And they don't know him because their hearts are stubborn.
They have lost all feeling for what is right. They have given themselves over to the evil pleasures of their bodies. They take part in every kind of unclean act. And they always long for more.
But that is not what you have learned about Christ.
I'm sure you heard of him. I'm sure you were taught by him. What you learned was the truth about Jesus.