Athanasius: Christ's omnipresence and omnipotence

Athanasius is one of the key figures that helped the Church formulate the doctrine of the Trinity. While his own words may not be authoritative, the creeds that were built off of his words have carried great authority in the Church over the ages. Here's a great quote from his work, On the Incarnation:

...he was not, as might be imagined, circumscribed in the body, nor, while present in the body, was he absent elsewhere; nor, while he moved the body, was the universe left void of his working and providence; but, thing most marvelous, Word as he was, so far from being contained by anything, he rather contained all things himself; and just as while present in the whole of creation, he is at once distance in being from the universe, and present in all things by his own power - giving order to all things, and over all and in all revealing his own providence, and giving life to each thing and all things, including the whole without being included, but being in his own Father alone wholly and in every respect - thus, even while present in a human body and himself quickening it, he was, without inconsistency, quickening the universe as well, and was in every process of nature, and was outside the whole, and while known from the body by his works, he was none the less manifest from the working of the universe as well. [Athanasius, On the Incarnation, no. 17]