Baptism is necessary for getting into Heaven. "Unless a man is born again, he cannot enter into the Kingdom of the heavens." In Jesus own words.
Is baptism necessary for salvation or eternal life? Why the bible teaches that there will be a ressurection of the ungodly on earth to be tested by satan at the end of the "thousand year period".
I believe faithful baptised Christians go to heaven while bad or ignorant of God's will; people are brought back to life on earth.