What is meant by "four squads of soldiers" (Acts 12:4)?
After putting Peter in prison, Herod Agrippa ordered him to be guarded with
the maximum security arrangement at the time for a prisoner: four squads,
each comprised of four soldiers, guarded Peter around the clock in shifts of three hours during
the night and six hours during the day. During each shift, two soldiers were
inside the prison cell and actually chained to Peter, while two soldiers
stood guard outside the
prison cell.
Why did Herod do that?
Peter had a habit of disappearing from prison (see
Sadducees).
How many obstacles stood between Peter and freedom?
At least ten: "two chains" (Acts 12:6) on
"his hands" (Acts 12:7), the "two soldiers"
(Acts 12:6) at the other end of those chains, "the door"
(Acts 12:6) of his prison cell, the two "guards"
(Acts 12:6) on the other side of that door, "the first
and the second guard posts" (Acts 12:10) and
"the iron gate" (Acts 12:10).
How stealthy was the "angel of the Lord" (Acts 12:7)?
He wasn't. Upon arrival, he lit up the prison - "light
shone in the prison" (Acts 12:7). He "struck"
(Acts 12:7) Peter, talked to him, and since Peter had been
"raised... up" (Acts 12:7),
"his chains" (Acts 12:7) probably made noise when they
"fell off his hands" (Acts 12:7).
Then why didn't the soldiers guarding Peter wake up?
They weren't asleep. They "were keeping the prison"
(Acts 12:6) as they were supposed to, but the angel of the Lord had made
them see and hear nothing.
How rushed was this prison break?
It wasn't. The angel even told and waited for Peter to get dressed properly:
"Then the angel said to him, 'Gird yourself and tie on
your sandals'; and so he did. And he said to him, 'Put on your garment and
follow me'" (Acts 12:8).
What did Peter think was happening to him?
Since he had been sleeping and "did not know that what
was done by the angel was real, but thought he was seeing a vision"
(Acts 12:9) until after the fact, he probably thought he was enjoying a good
dream.
Did God's miraculous guidance of Peter end outside the
prison gate?
Unless the many who "were gathered together praying"
(Acts 12:12) were praying very loudly, which is doubtful since it would have
risked them being arrested as well, and since Peter's visit shocked them, God also
miraculously led Peter to them.