Matthew Poole and continuators on Acts 4:13

13 ¶ Now when they saw the boldness of Peter and John, and perceived that they were unlearned and ignorant men , they marvelled, and they took knowledge of them, that they had been with Jesus .

Not wholly unlearned, but such as were without any polite Learning, or more than ordinary Education, such as every one amongst them had.

Idiots, so the Greek word from whence ours come, signifying such as was brought up at home, and never acted in a larger sphere, than the walls of their own house; having never been Magistrates, or Teachers of the Law, or any way publick persons; and spake onely their mother Tongue.

Which these Rulers might easily take notice of; many of them frequenting his company too, Matth. 21.23. Luke 18.8. Iohn 12.42.