An essential skill to develop—particularly if you intend to discuss the truth of your faith with others—is how to understand, evaluate, and present a logical argument. Though it might seem complex and rather intimidating, an argument in logic is really a very simple thing. To have an argument you must make a claim (called the conclusion, or the central point of the argument) and provide support (called premises, or evidence, facts, and reasons) for believing the claim to be true or correct. To have a good argument (logically sound or cogent), your premises must be (1) true, (2) pertinent to your central claim, and (3) sufficient to justify the conclusion.
Read more at: How to ERASE Logical Fallacies – Reflections