Is It Circular Reasoning to Say the Bible Is True Because God Says It’s True?

Questions about whether it’s circular reasoning to say the Bible is true because God says it’s true, how we can know when sarcasm or some other relevant tone is being used in the Bible, and whether tithing results in God’s faithful provision and financial blessings.

• Is it circular reasoning to say the Bible is true because God says it’s true (in the Bible)?
• How can we accurately read stories like 2 Chronicles 18:12–16, where it seems as if Micaiah was using sarcasm? How do we know when there is an important tone in play?
• Is it biblical for someone to say, “I’m so thankful for tithing and knowing God faithfully meets our needs because of our faithfulness”?
• Does the pouring out of blessings from Heaven when we test God with the tithe, spoken of in Malachi 3:10, refer to financial blessings?