John 6:35-47 tells us much more. Here we learn that "all drawn by the Father" come to Christ and He "raises them up on the last day." This tells us more about the nature of those who believe.
Rev 5:9-10 completes the picture:
"Worthy are You to take the book and to break its seals; for You were slain, and purchased for God with Your blood men from every tribe and tongue and people and nation.You have made them to be a kingdom and priests to our God; and they will reign upon the earth."
This passage is clearly describing atonement for believers.
You misunderstand the label 'Calvinism.' In reality it represents the truth of the Scriptures expounded by the apostles and rediscovered by Augustine amd Calvin after many had abandoned it for the philosophy of men.
The text literally says: "that all the one believing shall inherit eternal life",
Typing faster than the brain is responding. This should read:
The text literally says: "that all the one believing shall not be destroyed but shall have eternal life",