“It Doesn’t Say That”: Deductive Reasoning and the Bible

I want to share something with you that the Lord showed to me and the more He taught me, the more excited I got! I immediately knew it was meant for me to teach to our group of 14-23 year-olds we shepherd at our church. While I don’t have the use of a chalkboard to help me illustrate this as I did to them a few weeks ago, I will do my best to illustrate this awesome crash course in relevant and paramount apologetics. My earnest hope is that it will stimulate you, give you confidence and solidify your faith in the process as it did me.

Many times people will argue that something isn’t true because it isn’t explicitly stated in certain verbiage. They often do this with the Bible and use this as proof of its supposed unreliability. But this line of thinking is unsound and incorrect. In support of biblical truth, we know from other facts found throughout scripture that they are, in fact, true. Let me connect some dots for you and you will be able to do as the Word exhorts us to do, “…Always be prepared to make a defense to anyone who asks you for a reason for the hope that is in you…” (1 Peter 3:15).

Have you ever heard of what is called “Deductive Reasoning?” Even if you are unfamiliar with the terminology, you do this frequently. The verb “deduce” means to arrive at an answer or conclusion by putting different pieces of information together. It is an unbiased, fair and logical process and it is used in many professions and areas of life, some more complex than others. For example, in mathematics we can say: If 3 + 1 = 4, and we know that 3 + 1 is the same as (=) 1 + 3, then we can state with confidence that 1 + 3 = 4 as well.

What is a Pronoun? It renames or takes the place of another Noun. Remember this as we will refer back to it a little later. For those of you who didn’t like English or Grammar class and were one of those who asked themselves, “When will I ever use this later in life?” Well, today you’ll find the answer, and it’s an integral part of an important lesson.

Deductive Reasoning is taking pieces of known information and fitting them together to arrive at a conclusion which is not stated obviously or not known previously, by some or many, to be true. Police do this when they are presented with pieces of evidence. As they follow where the evidence leads, they can verify some is true and keep it, while deleting what is false and, as they investigate further, pieces of evidence and testimonies from witnesses will allow them to find the ultimate truth of the matter.

As a wonderful example, Holy Spirit reminded me that the week prior we had three visiting teenagers that were related to one another and to one of the girls who regularly attends our special church that we hold upstairs. The two girls told us they and the two boys were all cousins. So, as I was preparing for our time together during the days leading up to it, I was given this practical and apt analogy. When we got together I said to the young people that if I gave Cindy, Valeria, Angel and Erwin an assignment to write a short biography about themselves and, in these papers, I read that Cindy and Valeria had each mentioned that they were related to Angel (with no mention of Erwin) and, in reading Erwin’s account, I learned that he said he was related to Angel (with no mention of the girls) I would be able to deduce from these pieces of information that Erwin, Cindy and Valeria were related also. I bet you already figured this out as well. How do we know this? Because if the girls are cousins with Angel and Erwin is cousins with Angel, we can know for certain that Erwin, Cindy and Valeria are cousins as well. Someone might doubt this because he never heard them say it, but we know from their testimonies—even what they leave out—that our reasoning is completely accurate and true. The Lord took me to school and I loved every bit of it!

Now let’s take this same approach to scripture in order to arrive at a true conclusion that we can prove from the Word at different places in the Bible. People who attempt to discredit God’s authoritative Word may say that the phrase “Jesus is God” is not in the Bible. They will assert that nowhere in the Bible is this phraseology found. And they would be correct. BUT, this thin slab of a foundation on which they hope to dismantle our faith is actually sinking sand. (Let us not forget that some people who genuinely seek proof for their fledgling faith and those who are simply seeking answers before committing their lives to Jesus Christ’s lordship are not wrong to do so, nor are we to assume their motives are wrong either. I say this because it’s so easy to get in “defense mode” rather than remain in the love we have been called to). Okay, read on and bear in mind this is a very pertinent application of Ephesians 6: 10-20.

I like to read and suggest to others that they begin to read the Word in Genesis. However, many suggest the Gospel of John. Beginning in the beginning is always better; it is where the Lord started and it introduces the reader to the sin problem which is at the core of the Gospel message. However, John is a very good place too, especially if all they have is a New Testament to read from. In verses 1-4, it packs quite an informational punch saying, “In the beginning was the Word, and the Word was with God and the Word was God. All things were made through Him, and without Him was not anything made that was made. In Him was life, and the life was the light of men.”

Question: What facts do we know or can we glean from this passage?

• The WORD was in the beginning
• The WORD was with God (in the beginning)
• The WORD was God
• All things were made through HIM
• Nothing that has been made was made without HIM
• LIFE was in HIM
• This LIFE was the light of men

Question: From these facts alone, what other unwritten, indirect facts can also be known correctly through deduction and logical, truthful reasoning (about the “word”)?

• That the “word” is masculine (The word is referred to as “him” in verse 2)
• That this same “him” made and created the world and everything in it (verse 3)
• That the “word” was/ is “life” (verse 4)
• That the “word”, this same “him,” was/ is the light of men (verse 4)

Now jump down a short way to verses 6-8 which relate, “There was a man sent from God whose name was John (the Baptist). He came as a witness, to bear witness about the light, that all might believe through “him.” He (John) was not the light, but came to bear witness about the light.”

Question: After reading these facts, these pieces of information, we can put them together with the other facts we have just read and can know from truthful deduction (putting pieces of information together to arrive at a conclusion), what else that is not specifically written or told here?

• Since John came to bear witness about the light (verse 7), and verse 4 says that the life was the “light” of men, then John came to bear witness about LIFE.
• Since verse 8 tells us that John is not the light, then we know that John was not LIFE either.

John 1:14 says, “And the “word” became flesh and dwelt among us and we have seen HIS glory…”

John 14:6 says, “Jesus said to him, ‘I am the way, the truth and the life. No one comes to the Father except through Me.’”

Question: Who is speaking here, in the latter verse? JESUS.

Question: How do we know this? The beginning of verse 6 says, “JESUS said to him…”

*** Since John 14:6 says “Jesus is the LIFE”, and John 1:4 says that “in him was LIFE,” we now know that LIFE is in Jesus and the “him” referred to in verses 3-4 (2 times) also refers to Jesus.***

Verse 1 mentions: 1) The “word” was IN THE BEGINNING, 2) The “word” was WITH GOD and 3) The “word” WAS/ IS GOD.

Now to come back to what was briefly foreshadowed near the beginning– the term “Pronoun.” What is it and what does it do? It is a Noun that renames or takes the place of another noun. For example, if I write or say “Steve loves sports. HE is on the basketball, football and soccer teams.” We know that HE refers back to Steve. So, when verse 1 (John chapter 1) says “the word” three times and verse 2 (again John chapter 1) says “he,” this same “he” refers to, takes the place of and is the same as THE WORD.

Verse 4 tells us that “in HIM was life” (still referring to the “word”). John 14:6 (again) reveals that “Jesus is LIFE.”

*** Now we know that since Jesus called Himself “the LIFE” in chapter 14, verse 6 and that it points out in chapter 1, verse 4 that “in Him was LIFE,” we can easily and forthrightly conclude and deduce that this “him” is talking about Jesus. And since we know that the pronoun “him” in chapter 1, verses 3-4 and the pronoun “he” in chapter 1, verse 2 refers to the “word,” we now know assuredly that JESUS IS THE WORD. They are one and the same. JESUS = THE WORD.***

Question: Since we now know that Jesus is the Word, then when chapter 1, verse 1 says the “word” a) WAS IN THE BEGINNING, b) WAS WITH GOD and c) WAS/ IS GOD, then what can we now deduce?


So, even if someone may say that the Bible doesn’t use the specific words “Jesus is God,” in those exact terms or together in the same sentence, we know definitively that these other scriptures– these other facts–show us it can be reasoned and deduced logically and intelligently that “JESUS CHRIST IS GOD!”

I hope you have been encouraged, strengthened, emboldened and are now equipped to share your faith, what you have already believed and confessed, to any true seekers, to any doubters or skeptics, to adamant opposition and even with your children and any saints you have fellowship with. This is a blessing to me and pray it is to you!


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