Here are four ways God reveals Himself in the Bible.
In Our Hearts
The Apostle John wrote that Jesus “was life, and the life was the light of men” and that He is “the true light, which gives light to everyone, was coming into the world” (John 1:9), so “what can be known about God is plain to them, because God has shown it to them. For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse” (Romans 1:19-20). This is often called an internal manifestation of God, as “they show that the work of the law is written on their hearts, while their conscience also bears witness, and their conflicting thoughts accuse or even excuse them 16 on that day when, according to my gospel, God judges the secrets of men by Christ Jesus” (Romans 2:15-16).
David wrote that “the heavens declare the glory of God, and the sky above proclaims his handiwork” (Psalm 19:1), and “day to day pours out speech, and night to night reveals knowledge” (Psalm 19:2). These two verses state that the skies above proclaim His handiwork and they pour out speech, night after night, as if to say “I AM the Creator–just look at the creation.” Just as a painting demands a painter, so the creation demands a Creator, and we know Who He is. This is often called general revelation, which is an external manifestation of God in His creation.
In the Son of God
If you see the hundreds of fulfilled prophecies about Jesus as the Messiah and know the historical accuracy of the Bible, you can understand that we see that God reveals Himself in Jesus Christ. Jesus said, “Whoever has seen me has seen the Father” (John 14:9) because Jesus is the manifestation or revelation of the Father and “whoever sees me sees him who sent me” (John 12:45). We know Jesus existed because He was the most written-about Man in human history, and none can deny His existence, but Jesus came to reveal the Father to those who are not saved and to bring eternal life for all who would believe in Him.
Others can see Christ in us if we are living a holy life that is pleasing to God. The Apostle Peter wrote, “Keep your conduct among the Gentiles honorable, so that when they speak against you as evildoers, they may see your good deeds and glorify God on the day of visitation” (1 Peter 2:12). Jesus tells us to “let your light shine before others, so that they may see your good works and give glory to your Father who is in heaven” (Matthew 5:16). You may be the only Bible they ever read.
God will move heaven and earth to reveal Himself to someone who is seeking to worship Him in spirit and in truth (John 4:23) since “God is spirit, and those who worship him must worship in spirit and truth” (John 4:25). Those who do not believe that God exists are not being honest with themselves because there is internal, external, and biblical evidence that conclusively proves God does exist.