John Gill Commentary Acts 18:13

"saying, This man persuadeth men to worship God contrary to the law." — Acts 18:13 (ASV)

Saying, this fellow persuadeth men to worship God contrary
to the law .
] Meaning either to the law of the Romans, which forbad the bringing in of any new gods, without the leave of the senate; (See Gill on Acts 16:21); or rather to the law of Moses: the Arabic version reads, "our law"; though this was false, for Moses in his law wrote of Christ, and ordered the children of Israel to hearken to him.