The matter is seldom discussed but Jews believe in after-death purification (as we say in “purgatory”) before they are admitted to the Divine presence. The rabbis think that it may take about 11 months, on the average.
Sinless? That’s a deeply theological question, and I can’t answer in that fashion. In a practical way, we (Catholics and Jews) both admit, we have to have a goal of doing good and avoiding evil.
Tonight, I was reading that last chapter of Revelation where it says we will be judged for what we have done.
Jesus didn’t come to condemn us. He said, repent and believe. There is our hope.
One of the absolutely newest ideas I got from Scott Hahn was reading his book “Reasons for Belief.” He points out that (in the second creation account, Gen 2) that man is created and given dominion over all creation. This is a conferral of royalty, of kingship to man. And, one way of describing original sin was not just disobedience of God, but abdicating that dominion by subjecting themselves to the temptation of the serpent.
Jesus’ role was to overcome that loss of dominion and restore it. His blood washes away our sins, even our future sins. But, this is the blood of the covenant, a covenant which requires us to repent. Jesus is the judge who will examine our lives. Being as sinless as possible is probably one part of that judgment. We cannot save ourselves, we need a Savior.
That same last chapter of Revelation talks about our being worthy by eating the fruit of the tree of life, and living at the banquet of the Lamb, consuming the body and blood of Christ. We must be so perfected.