We hear your heart in this and we are standing with you in prayer as you wrestle with these deep questions. It is painful when a debate shakes our confidence, especially when we have walked closely with the Lord and fear returning to a world that treated us so harshly. Please know that doubting does not make you an atheist, and questioning does not mean your faith was not real. Even strong believers have seasons of doubt, and God invites us to seek answers.
We want to gently address the questions your friend raised, because there are good, biblical answers.
Yes, there were other religions before the Bible was written down as a book, but that does not mean God did not exist before the Bible. God is eternal and His truth existed from the beginning. The Bible itself tells us In the beginning, God created the heavens and the earth. Genesis 1:1. And Jesus said I am the way, the truth, and the life. No one comes to the Father, except through me. John 14:6. Other religions existing does not disprove the one true God, it actually shows what Scripture teaches, that mankind has always known there is a Creator and has sought to worship, but often turned to false ways. For the invisible things of him since the creation of the world are clearly seen, being perceived through the things that are made, even his everlasting power and divinity, that they may be without excuse. Romans 1:20.
You asked when the Bible was created and about Moses. You are right that God spoke to Moses and Moses wrote the first five books, often called the Law, around 1400 BC. But the Bible was not created all at once. It was revealed progressively over about 1500 years through many prophets and apostles as God moved them. All Scripture is God-breathed and profitable for teaching, for reproof, for correction, and for instruction in righteousness. 2 Timothy 3:16. Before Moses, God still spoke to His people. Adam, Noah, Abraham, Isaac and Jacob all knew and followed the true God by faith long before anything was written down. They passed His words and His deeds on by telling them faithfully from generation to generation, and God preserved what needed to be written when the time came. So there were no Christians before Christ in name, because the name Christian means follower of Christ and Christ had not yet come in the flesh, but there were always people of faith who trusted in the promise of the coming Savior. Jesus Himself said Abraham rejoiced to see His day. That faith is what saved them, looking forward to the Messiah, just as we look back to Him.
You asked why they did not write anything down sooner and why there are no pictures of Jesus. For a long time most people could not read or write and had no paper as we do, so oral testimony was the trusted way to preserve history, and God ensured His Word was written exactly when He intended. The grass withers, the flower fades, but the word of our God stands forever. Isaiah 40:8. As for pictures of Jesus, there were no cameras in the first century, and the Jewish people took seriously the command You shall not make for yourselves an idol, nor any image of anything that is in the heavens above. Exodus 20:4. The early followers of Jesus were not focused on preserving His physical appearance, but on preserving His teachings, His death and His resurrection. What mattered was not what He looked like, but who He is, the Son of God who died for our sins and rose again. God intentionally did not give us a physical description to worship, so we would worship Him in spirit and truth and not turn His image into an idol.
We also hear you say you think you might become an atheist but you do not want to come back to the world. We urge you not to let one difficult conversation pull you away from the One who has loved you and kept you. The world will always debate and mock, but only Jesus offers true hope. We encourage you to contend for the faith that was once for all delivered to the saints. Jude 1:3 and to always be ready to give an answer to everyone who asks you a reason concerning the hope that is in you, with humility and fear. 1 Peter 3:15. That readiness comes through spending time in the Word, prayer, and fellowship with mature believers who can help you work through these questions. Faith comes by hearing, and hearing by the word of Christ. Romans 10:17. And without faith it is impossible to be well pleasing to him, for he who comes to God must believe that he exists, and that he is a rewarder of those who seek him. Hebrews 11:6.
We notice you spoke of Jesus and Christians, and we want to remind you that it is only through the name of Jesus Christ that we have access to God and salvation. There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved. Acts 4:12. If you have trusted in Him, cling to Him now. If you have never fully surrendered your life to Him, we encourage you to confess that you are a sinner in need of a Savior, believe that Jesus died on the cross for your sins and rose again, and call upon His name to save you.
We pray together for you now.
Father, we lift up this dear one to You in the name of Jesus Christ. You see the doubt and the heaviness after this debate, and You see the fear of returning to a world that caused such pain. Lord, strengthen wavering faith and replace confusion with clarity. Help our friend to know that You are eternal, that Your Word is true and God-breathed, and that Jesus is the only way to You. Draw near and reveal Yourself, calm the storm of questions, and lead to solid teaching and godly counsel where these questions can be answered with truth and love. Guard this heart from the deception of unbelief and keep our friend from turning away. Restore joy and assurance, and help this faith to become even stronger through this trial. We ask this in the precious name of Jesus, our Lord and Savior, amen.
We encourage you to stay in the Word daily, starting in the Gospel of John, to pray honestly about your doubts, and to speak with a pastor or trusted mature believer who can walk through these apologetic questions with you. God is not threatened by your questions, He invites you to seek Him with all your heart. Keep seeking, and you will find Him.