Know Your Audience
The person without the Spirit does not accept the things that come from the Spirit of God but considers them foolishness, and cannot understand them because they are discerned only through the Spirit. The person with the Spirit makes judgments about all things, but such a person is not subject to merely human judgments,
To a Jewish audience who knew about the things of God Peter preached repentance.
When the people heard this, they were cut to the heart and said to Peter and the other apostles, “Brothers, what shall we do?” Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit.
To the Phillipian Jailer, Paul preached a very different message.
The jailer called for lights, rushed in and fell trembling before Paul and Silas. He then brought them out and asked, “Sirs, what must I do to be saved?” They replied, “Believe in the Lord Jesus, and you will be saved–you and your household.”
Note: to a covenant people familiar with covenant and with what sin was, Peter preached repentance. To a gentile pagan man with no concept of sin as it relates to the word of God, Paul, in response to the man’s question, “what must I do to be saved?” , responds, “believe”.
By no means am I saying there is no need for repentance and forgiveness of sins. What I am saying is know your audience and be sensitive to the leading of the Holy Spirit. It is the Holy Spirit’s job to convict the world of sin, not ours ,”When he comes, he will prove the world to be in the wrong about sin and righteousness and judgment: about sin, because people do not believe in me; about righteousness, because I am going to the Father, where you can see me no longer; and about judgment, because the prince of this world now stands condemned”.
Also, it was after an earthquake and the Lord showing His power and glory that led the jailer to recognize that he needed saving.
Jesus told his disciples that He would make them fishers of men. You need bait to catch fish and the bait you use depends on the fish you are trying to catch. In any event, the bait is determined by the Holy Spirit whether it be a healing or word of knowledge or an earthquake as in the case of the jailer, He alone knows the human heart and what it will take to lead the individual to Christ.