"Now unto Him that is able to do exceeding abundantly above all that we ask or think, according to the power that worketh in us" (Ephesians 3:20).
The "power that worketh in us" is nothing less than the power of the tri-une God of creation! In the verses just preceding our text (Ephesians 3:14-19), Paul had prayed to the Father for the Ephesian believers that: (1) they would "be strengthened with might by His Spirit in the inner man"; (2) "Christ may dwell in your hearts by faith"; and (3) "ye might be filled with all the fullness of God." Thus, the prayer was, in effect, that they would be indwelt and empowered by the Spirit, by Christ, and by all God's fullness.
Consider other references to the power of the Godhead: First, the Spirit. "Now the God of hope fill you with all joy and peace in believing, that ye may abound in hope, through the power of the Holy Ghost" (Romans 15:13). "Ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me" (Acts 1:8).
Note also the power of Christ in us. "All power is given unto me. . ." He said. "And, lo, I am with you alway, even unto the end of the world" (Matthew 28:18,20). Paul testified: "Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me" (II Corinthians 12:9). His great desire was "That I may know Him, and the power of His resurrection" (Philippians 3:10).
Finally, there is the omnipotent Father. Jesus taught His disciples that the theme beginning and ending true prayer is: "Our Father which art in heaven. . . . thine is the kingdom, and the power, and the glory, for ever. Amen" (Matthew 6:9,13). The Son also said that "Hereafter shall the Son of man sit on the right hand of the power of God" (Luke 22:69). How little we know and appreciate the power that worketh in us! HMM