What is eleven contributions (eleven donations)?

Abraham gave a tenth of his income to Melchizedek of Salem, which was regarded by later generations as "the origin of the eleventh dedication." And since the law of Moses, it has been institutionalized and implemented. The Israelites gave a tenth of their income to the Lord God, which was also used to support the service of the Levites. Four centuries ago, the Christian church did not follow the principle of "Eleventh Dedication", and believers could donate whatever they wanted. Since the Roman Empire accepted Christianity as the state religion, the church began to implement the "Eleventh Dedication". It was not until the sixth century that the "Eleventh Dedication" gradually became popular among Christian churches in Western Europe. In the end, the "Eleventh Dedication" was mentioned in the Great Council in 567 and 585 AD, and was adopted as a necessary standard for dedication to the church.