Too many people have made the Gospel way too difficult. When we look at this prison guard, we find the answer to what it takes for a person to be saved. He asked, "What must I do to be saved?" Either Paul was a heretic, or what he was about to say shows us what it takes to be saved. Paul said, "Believe on the Lord Jesus Christ, and thou shalt be saved."
You will notice that Paul did not say, "Believe and work to keep your salvation." You will notice that Paul did not say, "Believe and repent of every sin to be saved." You will notice that Paul did not say, "Believe and be baptized, and then you will be saved." Paul simply said, "Believe on the Lord Jesus Christ, and thou shalt be saved."
My friend, salvation comes from repenting of your unbelief and placing your belief in Jesus Christ as the only way to be saved. In fact, throughout the book of Acts, we see the importance of believing for a person to be saved. In Acts 18:27, it says that Apollos "helped them much which had believed through grace." In other words, we are saved by grace, which means that there is nothing we can do to save ourselves other than believe on the Lord Jesus Christ.
In Acts 19:2, Paul asked, "Have ye received the Holy Ghost since ye believed?" Notice he did not ask if they had received the Holy Ghost since they believed and worked to keep their salvation. Notice he did not ask if they had received the Holy Ghost since they had repented of every sin and believed. All these people had to do to receive the Holy Ghost was believe. Believe on what? Believe on the Lord Jesus Christ, and thou shalt be saved.
Let us stop making salvation more difficult than it is, for anything that is more difficult than believing on the Lord Jesus Christ IS NOT salvation. Christ made it very plain throughout the Scriptures that a person gets saved simply by stopping his trust in anything other than the Lord Jesus Christ to save him. When a person puts his faith and trust in Christ's payment for his sin on Calvary as the payment for his sins, then he is saved.
Why would Christ make salvation so simple for the lost? He made it simple because He is not willing that any should perish, but that all should come to repentance. He makes it easy because He loves people and wants them in Heaven. Maybe we as believers ought to love people the same way that God loves them, and if we do, we will not make salvation more difficult than the Scriptures make it, which is simply believing on the Lord Jesus Christ for salvation.