In the fifth century significant arguments arose over the precise nature and relationship of the divinity and humanity of Jesus. Christians of these times, such as Leo I of Rome, believed that the very core of the gospel was at stake and that misunderstandings about the nature of Jesus would significantly damage our understanding of salvation. These disputes were partially resolved by convening councils of church leaders. At these councils, general agreement in doctrine was established. This doctrine was not universally accepted however, and a number of splits emerged that still exist today.