I wonder what Bible did the Spanish carry with them. According to reformed.org the Geneva Bible was the most popular book of testimony in England during the 15th and 16th centuries. Perhaps the Spanish carried and studied the Geneva Bible as well. A verse from the book reads, 1 Corinthians 10:31-32 "Whether therefore ye eat, or drink, orwhatsoever ye do, do all to the glory of God. Give none offence, neither to the Jews, nor to the Gentiles, nor to the church of God:" This verse states that other religions should be tolerated. If so, why didn't the Spanish tolerate the spiritual beliefs of the natives?
Another verse from the book reads, "17 For Christ sent me not to baptize, but to preach the Gospel, not with wisdom of words, lest the cross of Christ should be made of none effect." From my understanding, in this verse Peter, (Jesus's apostle) states that he was sent to preach but not to "baptize" or convert others. If the Spanish practiced the verses of this book then why did they harshly force Christianity to the natives?