Unless you can demonstrate that any god being actually exists who makes laws, the concept of 'sin' in nothing more than a made-up concept.
Clearly your Jesus character did NOT pay-in-full any ransom covered for all time, because 2000 years later we still have 'sin'.
I do wonder what is your reasoning behind saying because 2,000 years later......
We have Not yet reached Jesus' Glory Time of Separation as found at Matthew 25:31-34
We are all still being offered to pray the invitation to God of Rev. 22:20 for Jesus to come !
Come! at Jesus' future Glory Time - Matthew 16:27; Mark 8:38
Revelation was written long after Jesus died. Revelation 1:10's setting is for our day or our time frame.
So, Jesus' coming time frame or day is Not the first century, so we don't start counting from the 1st century.
We count from our time, true we don't know the day or hour but we do know the season is now ripe - Matthew 24:32-33.
True, Jesus appeared in the first century and he could have appeared any time after Genesis 3:15 was spoken.
Progressive prophecy placed Jesus in the first century, and we see just as Jesus teaches at Luke 19:11-15 he would first go away for a long-time journey before he would later return or come back at his Glory Time or Harvest Time of Separation.
The 'now' international proclaiming about God's kingdom aka government (Daniel 2:44; Daniel 7:13-14) is being done globally just as Jesus said it would be done at Matthew 24:14; Acts 1:8.
We will have sinful leanings until Jesus' coming 1,000 year reign over Earth comes.
Then, at this coming time there will be ' healing ' for earth's nations as mentioned at Revelation 22:2.