After discussing his apostleship, Paul addressed a prayer for the Ephesians to have strength to maintain Christ in their hearts in face of harsh trials as well as during good times. Christ well-rooted in the heart causes one to seek only those things that provide a suitable dwelling place for the Lord.
Paul prayed that the Ephesians would know the dimensions of the love of Christ. The width of His love is wide enough to fill the needs of all men of all nations. His love is long enough for Him to die on the cross that all men might live. Christ’s love goes deep enough to lift the most wicked of mankind out of the mire of sin. His love desires that all would be His disciples and live with Him eternally in heaven.
As he ended his petition, Paul recognized the infinite power of God and glorified His name for eternity.