Biblical Christianity adheres to the fundamentals of the Christian faith, as found in the Bible:1) The Triunity of God: the one God exists eternally in three Persons.2) Jesus Christ is fully man and fully God. His death was the substitutionary sacrifice for sinners, and He rose again bodily.3) Salvation is by grace alone through faith alone in Christ alone.4) The sixty-six books of the Bible are God’s Word, inspired, inerrant, and sufficient for living a godly life.5) Jesus Christ is coming again to judge sin and rule the world.Any departure from these points represents a departure from biblical Christianity.The words we have in both the Old and New Testaments are described as God’s very words (Job 23:12; Psalm 119: 9; Isaiah 55:11; John 6:63; 2 Timothy 3:16–17). The apostle Paul commends the believers in Thessalonica for accepting what he shared as God’s words to them: “And we also thank God continually because, when you received the word of God, which you heard from us, you accepted it not as a human word, but as it actually is, the word of God, which is indeed at work in you who believe” (1 Thessalonians 2:13). Jesus Himself exemplified the importance of God’s Word. When He was tempted, He relied on Scripture to defeat Satan, saying, “It is written: ‘Man shall not live on bread alone, but on every word that comes from the mouth of God’” (Matthew 4:4). This is the example the early Christians followed in their faith.In the days of the early church, there was no such thing as cultural Christianity. Believers were in many ways counter-cultural, transformed by Christ’s resurrection and the Holy Spirit. They studied the Scriptures (Acts 17:11). They were biblical Christians. Whereas cultural Christianity is comfortable and focused on cultural issues, biblical Christianity produces believers who are willing to die for their faith based on what the Bible says. Biblical Christianity is historic Christianity.A true Christian has received Jesus Christ as personal Lord and Savior (John 1:12). He believes that Christ has paid the penalty for his sin (2 Corinthians 5:21). He trusts in Jesus’ resurrection. Jesus said that anyone who wishes to become His disciple must “deny himself, take up his cross daily, and follow me” (Luke 9:23). A biblical Christian knows what that looks like because he bases his life on God’s Word, not on cultural norms.