"What was from the beginning, what we have heard, what we have seen with our eyes, what we have observed and have touched with our hands, concerning the Word of life— that life was revealed, and we have seen it and we testify and declare to you the eternal life that was with the Father and was revealed to us— what we have seen and heard we also declare to you, so that you may have fellowship along with us; and indeed our fellowship is with the Father and with His Son Jesus Christ.
We are writing these things so that our joy may be complete.
Now this is the message we have heard from Him and declare to you: God is light, and there is absolutely no darkness in Him. If we say, 'We have fellowship with Him,' yet we walk in darkness, we are lying and are not practicing the truth. But if we walk in the light as He Himself is in the light, we have fellowship with one another, and the blood of Jesus His Son cleanses us from all sin. If we say, 'We have no sin,' we are deceiving ourselves, and the truth is not in us. If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness. If we say, 'We don’t have any sin,' we make Him a liar, and His word is not in us." (1 John 1)
John was likely the disciple who had the closest and deepest relationship with Christ. If you ever begin to wonder about the truth of the message of Christ, be encouraged to know that people who lived, walked, ate, laughed, and rested with Jesus actually wrote down their experience.
Perhaps it can be an encouragement to you to write down what God has done for you so others can see that He is real.