What does Acts 10:31 mean?

He said to them, “You yourselves know how it is an unlawful thing for a man who is a Jew to join himself or come to one of another nation, but God has shown me that I shouldn’t call any man unholy or unclean.

Therefore also I came without complaint when I was sent for. I ask therefore, why did you send for me?”

Cornelius said, “Four days ago, I was fasting until this hour, and at the ninth hour, I prayed in my house, and behold, a man stood before me in bright clothing,

Send therefore to Joppa, and summon Simon, who is also called Peter. He lodges in the house of a tanner named Simon, by the seaside. When he comes, he will speak to you.’

Therefore I sent to you at once, and it was good of you to come. Now therefore we are all here present in the sight of God to hear all things that have been commanded you by God.”

Peter opened his mouth and said, “Truly I perceive that God doesn’t show favoritism;