Paul had explained that Jews and Gentiles are one in Christ ( Ephesians 2:15). Therefore he prayed that they might experience the unity that was theirs spiritually in their relations with one another. He turned from exposition to intercession (cf. ch1; John 13-17). Ephesians 3:14-19 are also one sentence in the Greek text. [source][source][source]
"In the first prayer [1], the emphasis is on enlightenment; but in this prayer, the emphasis is on enablement. It is not so much a matter of knowing as being-laying our hands on what God has for us and by faith making it a vital part of our lives." [2][source]
"Whereas the first prayer centers in knowledge, this prayer has its focal point in love." [3][source]