“Then Peter began to speak: ‘I now realize how true it is that God does not show favoritism but accepts from every nation the one who fears him and does what is right.'” (Acts 10:34-35, NIV)
As Peter was before his vision (please see Acts 10:9ff), we prefer people we like; and we prefer people like us. This is our nature apart from God, and it is the starting point of racism, sexism, nationalism, and all other preferences based on outward appearances and other superficial things.
When we begin to see people as God sees people, we will be humbled by how often our personal preferences are tied to the most superficial human qualities. We will also be amazed at how often the persons accepted by God are 180-degrees out from us in physical appearance, cultural background, native language, and national origin.
God commands us to be like Him: Accepting of every person (nationality, race, culture, gender) “who fears Him and does what is right.” – Luther