GOD'S WORD® Translation
Because they are united in love, I work so that they may be encouraged by all the riches that come from a complete understanding of Christ. He is the mystery of God.

American Standard Version
that their hearts may be comforted, they being knit together in love, and unto all riches of the full assurance of understanding, that they may know the mystery of God, even Christ,

Berean Study Bible
that they may be encouraged in heart, knit together in love, and filled with the full riches of complete understanding, so that they may know the mystery of God, namely Christ,

Douay-Rheims Bible
That their hearts may be comforted, being instructed in charity, and unto all riches of fulness of understanding, unto the knowledge of the mystery of God the Father and of Christ Jesus:

English Revised Version
that their hearts may be comforted, they being knit together in love, and unto all riches of the full assurance of understanding, that they may know the mystery of God, even Christ,

King James Bible
That their hearts might be comforted, being knit together in love, and unto all riches of the full assurance of understanding, to the acknowledgement of the mystery of God, and of the Father, and of Christ;

World English Bible
that their hearts may be comforted, they being knit together in love, and gaining all riches of the full assurance of understanding, that they may know the mystery of God, both of the Father and of Christ,

Young's Literal Translation
that their hearts may be comforted, being united in love, and to all riches of the full assurance of the understanding, to the full knowledge of the secret of the God and Father, and of the Christ,

Colossians 2:2 Additional Translations ...