I also think that overtime our thinking on various subjects evolve.
I can think of a number of subjects where my opinions, formed by the attitudes and knowledge of the period - and I mean 1960s - 80s - hves then changed as more information became available or where a subject I had never really thought about, became of active current concern , so that I did think about it.
For all but a few, our attitudes are not cast in stone. For under 30s I would ignore anything said more than five years ago, unless it was an attitude repeated many times and continued way past a time when they should know better. For people over 30, I would ignore anything said more than 10 years ago..
Bear in mind that St Paul had been a persecutor of Christians before the incident on the road to Damascus, which led to his conversion to Christianity and his later willingness to die for that religion. Nowadays, he would be hounded to the end of his life by those refusing to believe he could really be a christian, because he had once thought otherwise, indeed the leaders of the christian church may well have rejected him because of his previous allegiance.