"The First Blast" contained four main counterarguments to John Calvin's arguments. First, Knox argued that while God had given authority to biblical female leaders, Deborah and Huldah, God had not given that authority to any female in the 16th century. Elaborating, Knox stated that the only similarity Queen Mary had with Deborah and Huldah was their gender. This was not sufficient to Knox. Furthermore, Deborah and Huldah did not claim the right to pass on their authority, but the queens did.