Then called he them in. — As it was about noon when Peter went up to the house-top to pray, the arrival of the messengers, allowing an adequate interval for the trance and the vision, may be placed at some time in the afternoon.
Certain brethren from Joppa. — We learn from Acts 11:12, that they were six in number. They were obviously taken that “in the mouth of two or three witnesses every word might be established” (Deuteronomy 17:6; Deuteronomy 19:15), that they might report to the Church at Joppa what had been done by the Apostle whom they had learnt to reverence.