- Language barriers. The Puritans did not speak the native languages of the Indians, which made communication difficult. This made it difficult for them to explain their beliefs and to answer questions that the Indians had.
- Cultural differences. The Puritans and the Indians had very different cultures. The Puritans viewed the Indians as primitive and ungodly, while the Indians viewed the Puritans as arrogant and condescending. These cultural differences made it difficult for the Puritans to convert the Indians to their way of life.
- Political divisions. The Puritans were often at war with the Indians. This made it difficult to build trust between the two groups and made it difficult for the Indians to feel comfortable converting to a religion that was associated with their enemies.
- Economic competition. The Puritans and the Indians were competing for resources such as land and food. This economic competition led to conflict between the two groups and made it difficult for the Indians to convert to a religion that was associated with their economic rivals.
- Religious intolerance. The Puritans were very intolerant of other religions. They believed that their own religion was the only true religion and that all other religions were false. This religious intolerance made it difficult for the Indians to convert to Puritanism, as they were not willing to give up their own religious beliefs.