All these had married foreign women and some of them had children by these wives.
The concern for these women being foreign was not because of their color but because of them having false god and being an unholy race. They did not worship the one true God. This is what we must teach our children. The most important factor when looking for a mate is to make sure they are a Christian, not just somebody that is a member of a church, but one who professes Jesus as their Lord and Savior! I have seen many women who thought they could change the person they married, but lived many many years in misery. Let's help our children to learn not to start a marriage off that would not be pleasing to God. Pray now that God will place that special person in their life.