Moses reminds the people of their responsibilities to the Lord in giving their tithes in the Promised land.
The Judaizers taught that the Law of Moses somehow did away with the promises of God to Abraham. Paul corrected that false notion.
Moses lists dietary restrictions again in this passage. Some possible reasons why.
The Judaizers wanted Gentile converts to be placed under the Law of Moses. Paul had much to say about this as he begins the doctrinal section of his letter.
God calls out the injustice in Israel and provides Himself as the solution to their sin problem.