 
Pope Shenouda III
    The  Lord Jesus Christ also said: "I am in the Father, and the  Father in Me" (Jn. 14: 10), and repeated this expression once more:  "believe Me that I am in the Father and the Father in Me, or else  believe Me for the  sake of the works themselves"   (Jn. 14:11). The Lord means the  works that reveal His Divinity such as  the works of creating. He  repeated the same relation in His soliloquy  with the Father, saying:  "You, Father, are in Me, and I in You"  (Jn. 17:2 1). The Father  in Him means that the Godhead dwells in Him,  that is, the unity of  Divinity with Humanity is in Him. The best  explanation of this point  are the words of St.  Paul the Apostle about  the  Lord Jesus Christ: "For in Him dwells all the fullness of the Godhead  bodily" (Col.  2:8,9). The in dwelling of the Godhead in  Christ is  the in dwelling  of the Person of the Father in Him, like the in dwelling  of light in  the sun or the in dwelling of heat in fire or the in  dwelling of  thought in the mind, on condition that it is understood that  both  objects are one entity..