Jesus was irresistible. You see that clearly when you read the Gospels. Love him or hate him, people were drawn to Jesus. His compassion and his message were certainly part of that. But something else stands at the forefront.
Jesus was irresistible because he fully embodied grace and truth. He didn’t balance them. He didn’t emphasize one at the expense of the other. It was grace and truth all the time. If his followers and his church want to be irresistable, we must live the same way.