After writing this long sentence of thanksgiving to God for all the spiritual gifts God has bestowed upon the Saints, in verses 15-17 Paul describes the purpose of writing this whole letter. He’s so thankful for where there at and the faith they have in Christ and the Love they have for God’s people, and as their Pastor he prays and yearns for them that they would know God better. This word knowledge means to experience. I believe Paul’s prayer was that the Ephesians would experience God in the way He had. It relates to how I think about my kids. I don’t want them just to play church and go through the motions, there is this yearning that they would experience God in ways like I have.