Question: "What are the gates of hell?"
Answer: The phrase the “gates of hell” is translated in some versions as the “gates of Hades.” “Gates of hell” or “gates of Hades” is found only once in the entire Scriptures, in Matthew 16:18. In this passage, Jesus is referring to the building of His church: “And I tell you, you are Peter, and on this rock I will build my church, and the gates of hell shall not prevail against it” (Matthew 16:18).
At that time Jesus had not yet established His church. In fact, this is the first instance of the word church in the New Testament. The word church, as used by Jesus, is derived from the Greek ekklasia, which means the “called out” or “assembly.” In other words, the church that Jesus is referencing as His church is the assembly of people who have been called out of the world by the gospel of Christ.
Bible scholars debate the actual meaning of the phrase “and the gates of hell shall not prevail against it.” One of the better interpretations to the meaning of this phrase is as follows. In ancient times, the cities were surrounded by walls with gates, and in battles the gates of these cities would usually be the first place their enemies assaulted. This was because the protection of the city was determined by the strength or power of its gates.
As such, the “gates of hell” or “gates of Hades” means the power of Hades. The name “Hades” was originally the name of the god who presided over the realm of the dead and was often referred to as the “house of Hades.” It designated the place to which everyone who departs this life descends, regardless of their moral character. In the New Testament, Hades is the realm of the dead, and in this verse Hades or hell is represented as a mighty city with its gates representing its power.
Jesus refers here to His impending death. Though He would be crucified and buried, He would rise from the dead and build His church. Jesus is emphasizing the fact that the powers of death could not hold Him in. Not only would the church be established in spite of the powers of Hades or hell, but the church would thrive in spite of these powers. The church will never fail, though generation after generation succumbs to the power of physical death, yet other generations will arise to perpetuate the church. And it will continue until it has fulfilled its mission on earth as Jesus has commanded:
“All authority in heaven and on earth has been given to me. Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age” (Matthew 28:18–20).
It is clear that Jesus was declaring that death has no power to hold God's people captive. Its gates are not strong enough to overpower and keep imprisoned the church of God. The Lord has conquered death (Romans 8:2; Acts 2:24). And because “death no longer is master over Him” (Romans 6:9), it is no longer master over those who belong to Him.
Satan has the power of death, and he will always use that power to try to destroy the church of Christ. But we have this promise from Jesus that His church, the “called out,” will prevail: “Yet a little while and the world will see me no more, but you will see me. Because I live, you also will live” (John 14:19).