Albert Barnes on John 14:10

I am in the Father. Jn 10:38.

The words that I speak, &c. Jn 7:16 Jn 7:17.

The Father that dwelleth in me. Literally, "The Father remaining in me." This denotes most intimate union, so that the works which Jesus did might be said to be done by the Father. It implies a more intimate union than can subsist between a mere man and God. Had Jesus been a mere man, like the prophets, he would have said, "The Father who sent or commissioned me doeth the works;" but here there is reference, doubtless, to that mysterious and peculiar union which subsists between the Father and the Son.

He doeth the works. The miracles which had been wrought by Jesus. The Father could be said to do them on account of the intimate union between him and the Son. See Jn 5:17, 19, 36, 10: 30.