John Gill Commentary Acts 10:21

"And Peter went down to the men, and said, Behold, I am he whom ye seek: what is the cause wherefore ye are come?" — Acts 10:21 (ASV)

Then Peter went down to the men
The Ethiopic version adds, "from the third floor"; to the place where the men were: the following clause,

which were sent unto him from Cornelius ,
is not in Beza's most ancient copy, nor in the Alexandrian copy, nor in the Vulgate Latin, Syriac, Arabic, and Ethiopic versions:

and said, behold, I am he whom you seek ;
without being called by any of the family he came down, and without being informed in that way who the men were inquiring for; it being suggested to him by the Spirit of God, he declared himself to be the person they were seeking after: and put this question to them,

what is the cause why you are come ?
for that was not intimated to him by the Spirit; it was only told him there were three men seeking him, and he was bid to go with them, without any scruple or hesitation; but what they came for, or he was to go with them about, was not suggested.