Race is a biological reality as in that there are biological sub-races within the human race and even these sub-races have sub-types as can be seen in Caucasian groups. Africans especially sub-Saharan ones and Asians too in much lesser extents look more primitive thanks to having stronger primitive strains.

People naturally prefer their own nation and people. Christ himself was clearly tribal and commented to love your neighbor (meaning fellow tribesmen) and their children. He rebuked the Edomite sandnegro-ish infiltrates telling them they are not his Israelite sheep. He compared the tribe of Canaanites to dogs yet mercifully helped the Canaanite lady in question. Thus indeed every sentient being can reach heaven potentially regardless of race.