Panentheism is the notion that everything is in God. It defines itself in contradiction to pantheism. Nevertheless it is a controversial idea, not least because to some it rather smells of pantheism. But in fact it isn’t anything like pantheism. Furthermore, the idea that we live and move and have being in God (Acts 17:28) is perfectly orthodox:
God is in all things; not, indeed, as part of their essence, nor as an accident; but as an agent is present to that upon which it works. For an agent must be joined to that wherein it acts immediately, and touch it by its virtue … therefore as long as a thing has being, God must be present to it according to its mode of being. But being is innermost in each thing and most fundamentally inherent in all things since it is formal in respect of everything found in a thing … Hence it must be that God is in all things, and innermostly.
… Although corporeal things are said to be in another as in that which contains them, nevertheless, spiritual things contain those things in which they are; as the soul contains the body. Hence also God is in things containing them; nevertheless, by a certain similitude to corporeal things, it is said that all things are in God; inasmuch as they are contained by Him.
– Summa Theologica 1.8.1