they recognized him as the man who used to sit begging at the Beautiful Gate of the temple, and they were filled with wonder and amazement at what had happened to him.
KJV
And they knew that it was he which sat for alms at the Beautiful gate of the temple: and they were filled with wonder and amazement at that which had happened unto him.
ASV
and they took knowledge of him, that it was he that sat for alms at the Beautiful Gate of the temple; and they were filled with wonder and amazement at that which had happened unto him.