Gerim vs Ezrahim

According to Judaism there are two major groups of people covered by the religion of Mount Sinai. One is the Ezrah (אזרח) group and the other is the Ger (גר) group.

The Ezrah (אזרח) group covers anyone whose Mother is recognized as Jewish by the Scribes and Pharisees. 

The Ger (גר) group covers anyone who believes in Judaism but whose Mother is not recognized as Jewish by the Scribes and Pharisees. 

All of Am Israel are brethren, both Ger and Ezrah alike, but it is better to be a believing Ger than a non-believing Ezrah. The worst kinds of Jew are the Ezrahim who think they are more Jewish than Gerim or anyone who thinks that only an Ezrah is a child of God because such views blasphemed the Ruakh haQodesh which is the only true promised seed in Judaism.

There are only two ways in Orthodox Judaism, either the Scribe/Pharisee Halakhah of the Qehal or the Noahide/Ger Derekh Eretz of the Edah. Any Ezrah who will not come to one or the other is outside of the folds of Judaism and is considered Apikorus.

Although the Law commands Kiruv to all lost Ezrahim so that they might at least return to the Derekh Eretz, nevertheless, it is always better for a believing Ezrah to socialize with Gerim and other believers if available to keep yourself grounded.