I am not a Calvinist or Reformed in my theology. But, it is very clear to me in the entire 66 Books of the Holy Bible, that salvation is from start to finish the Work of God the Holy Spirit. The Bible is clear that there is NONE who "seeks after God", in and out of themselves (see, Romans 3:10-12), this is a human impossibility! It is God the Holy Spirit, says Jesus Christ, Who must FIRST "convict" the sinner that they are a sinner, and they need Jesus Christ as their Saviour, as Jesus Himself says in John 16:8-10, " And He, when He is come, will convict the world in respect of sin...of sin, because they believe not on Me". When Peter finished his first "sermon" in Acts chapter 2, those who heard him, were "cut to the heart (convicted)" (verse 37), and this made them ask what they needed to do for salvation.
Paul goes into much detail in Romans chapter 10, about the need for preachers to be sent so that the Gospel of salvation can be heard by all, and sinners can get saved.
God has determined to save by the "foolishness of preaching" (1 Corinthians 1:21), to save those who believe in the Message.
It is a monstrous LIE that is being taught by some, that you can be saved and get to heaven, by simply raising your hand after a sermon is preached, where the message does not even call on sinners to repent of their sins and believe in the Saviour, Jesus Christ! This is what Paul calls in Galatians 1, "another gospel", which is in reality no gospel, as it can save no one!