In 'A Mathematical Introduction to Logic' by Enderton, page $147,$ the author stated the following theorem.
Theorem $26$A If a set $\Sigma$ of sentences has arbitrarily large finite models, then it has an infinite model.
The following is my question.
Question: I would like to know the meaning of arbitrarily large model.
I know that finite model means that its universe has finitely many elements. But I fail to understand arbitrarily large model, especially when we talk about arbitrarily large finite model.