God blessed mankind with two immutable gifts (among many others):
1. Objective reasoning;
2. The ability to reason objectively.
Since such is the case, obviously God had a reason for giving man the gift of reason. That reason is simply this: He expects us to use it! Yes, God expects and require that we abide by the rule of objective reason, and use the ability of objective reasoning—even (especially) when it comes to “handling aright the word of truth” (2 Tim. 2:15); for without objective reasoning and sound logic, it is impossible to “understand what the will of the Lord is” (Eph. 5:17).
“PROVE ALL THINGS; HOLD FAST THAT WHICH IS GOOD.”
1 THESSALONIANS 5:21
And so it is with all things pertaining to His religion—including the teachings of the Bible. In order to properly understand what the Bible teaches, one must use his God-given gift of reasoning and logic. There are things that the Bible teaches explicitly, but there are also things that the Bible teaches implicitly (i.e., by implication)—and implication requires inference. Furthermore, since both of these types of teachings are from God, both are authoritative.
…without objective reasoning and sound logic, it is impossible to “understand what the will of the Lord is” (Eph. 5:17).
Jesus used logic to prove the truth (Matt. 22:41-46; Mk. 3:22-30); Paul used logic to prove what the Bible truly taught (Acts 9:22; 17:3); and we must use logic to know and to prove what is, and what is not, Biblical and spiritual truth.