Jesus had no idea of ransom (which was a later development). He came with the expectation that people would believe him and world would be transformed into a paradise. This is reflected in his statements such as:
“Very truly I tell you, whoever hears my word and believes him who sent me has eternal life and will not be judged but has crossed over from death to life.” (John 5:24)
“Whoever lives by believing in me will never die.”—John 11:26
His calculation went wrong when he attacked the religious establishment of his time: “On reaching Jerusalem, Jesus entered the temple courts and began driving out those who were buying and selling there. He overturned the tables of the money changers and the benches of those selling doves, and would not allow anyone to carry merchandise through the temple courts. And as he taught them, he said,“Is it not written: ‘My house will be called a house of prayer for all nations’[c]? But you have made it ‘a den of robbers.’” The chief priests and the teachers of the law heard this and began looking for a way to KILL him.” (Mark 11:15-16)