Acts 12:4-6

Young's Literal Translation

⁴ whom also having seized, he did put in prison, having delivered [him] to four quaternions of soldiers to guard him, intending after the passover to bring him forth to the people.

⁵ Peter, therefore, indeed, was kept in the prison, and fervent prayer was being made by the assembly unto God for him,

⁶ and when Herod was about to bring him forth, the same night was Peter sleeping between two soldiers, having been bound with two chains, guards also before the door were keeping the prison,