NET

2 My goal is that their hearts, having been knit together in love, may be encouraged, and that they may have all the riches that assurance brings in their understanding of the knowledge of the mystery of God, namely, Christ,

Darby

2 to the end that their hearts may be encouraged, being united together in love, and unto all riches of the full assurance of understanding, to [the] full knowledge of the mystery of God;

KJV

2 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;