The Bible actually talks about it A LOT. You have to be saved to go to Heaven. There’s simply no other way. (watch for regular additions)
Consider these scriptures:
“Salvation is found in no one else, for there is no other name under heaven given to men by which we must be saved.”
29The jailer called for lights, rushed in and fell trembling before Paul and Silas. 30He then brought them out and asked, “Sirs, what must I do to be saved?”
31They replied, “Believe in the Lord Jesus, and you will be saved—you and your household.” 32Then they spoke the word of the Lord to him and to all the others in his house. 33At that hour of the night the jailer took them and washed their wounds; then immediately he and all his family were baptized. 34The jailer brought them into his house and set a meal before them; he was filled with joy because he had come to believe in God—he and his whole family.
You must be Born Again
1Now there was a man of the Pharisees named Nicodemus, a member of the Jewish ruling council. 2He came to Jesus at night and said, “Rabbi, we know you are a teacher who has come from God. For no one could perform the miraculous signs you are doing if God were not with him.”
3In reply Jesus declared, “I tell you the truth, no one can see the kingdom of God unless he is born again.”