they knew.

Acts 3:2
And a man who was lame from birth was being carried to the temple gate called Beautiful, where he was put every day to beg from those entering the temple courts.

Acts 4:14-16, 21, 22
And seeing the man who had been healed standing there with them, they had nothing to say in response. . . .

John 9:3, 18-21
Jesus answered, "Neither this man nor his parents sinned, but this happened so that the works of God would be displayed in him. . . .

they were.

Acts 2:7, 12
In wonder and amazement, they asked, "Are not all these men who are speaking Galileans? . . .

Luke 4:36
All the people were overcome with amazement and asked one another, "What is this message? With authority and power He commands the unclean spirits, and they come out!"

Luke 9:43
And they were all astonished at the greatness of God. While everyone was marveling at all that Jesus was doing, He said to His disciples,

John 5:20
The Father loves the Son and shows Him all He does. And to your amazement, He will show Him even greater works than these.