Logic is a tool given by God to help us order our reasoning and obey Him. Through our reasoning faculties God communicates to us. For example, the Scripture teaches that God has all power, and through deductive logic I can conclude that God has the power to save me. We see the sun rise and the rain fall, and through inductive reasoning we conclude that God is good. Through the process of reasoning we understand His revelation to us better.

We read that there is one God, and that the Father is God, the Son is God, and the Spirit is God; Through good and necessary consequence we conclude that there is one God, and He exists in three Persons: Father, Son, and Holy Spirit. We see that logic makes the implicit explicit, it reveals the truth already there. Logic properly used adds nothing to scripture, but it helps set forth clearly what is contained in scripture. This is because logic alone cannot give us truth. It must start with truths that are given to it in order to make conclusions based on that truth. The bucket doesn’t put the water in the well, it gets the water that is already there out of the well. This is what logic does.

Through the process of reasoning we apply universal law in particular obedience. For example, God commands all men everywhere to repent and believe. We take this universal law and through logic apply it to particulars: You are a man, therefore you must repent and believe. If people were allowed to reject logic, they could escape the application of God’s universal law to their particular situation; that is, they could get out of obedience: “The Bible says all men are to repent and believe; it doesn’t say I personally must.”