Acts 4:2

Verse 2. Being grieved. The word thus translated occurs but in one other place in the New Testament, Ac 16:18. It implies more than simple sorrow; it was a mingled emotion of indignation and anger. They did not grieve because they thought it a public calamity, but because it interfered with their authority, and opposed their doctrine. It means that it was painful to them, or they could not bear it. It is often the case that bigots, and men in authority, have this kind of grief at the zeal of men in spreading the truth, and thus undermining their influence and authority. That they taught the people.