A.T. Robertson Commentary Acts 4:23

"And being let go, they came to their own company, and reported all that the chief priests and the elders had said unto them." — Acts 4:23 (ASV)

To their own company (προς τους ιδιους). Their own people as in Joh 1:11; 13:1; Acts 24:23; 1 Timothy 5:8; Titus 3:14, not merely the apostles (all the disciples). In spite of Peter's courageous defiance he and John told the brotherhood all that had been said by the Sanhedrin. They had real apprehension of the outcome.