First, I apologize if my answer shows up twice.  I was double-checking something in the original article and my answer went away.  I think the article says the same thing, but I do not know if that that is a common French understanding of the timeline.  Among evangelicals in America, Canada, and France, the traditional timeline would be that Jesus was crucified on a Thursday and rose again on a Sunday.  That allows for the three days in the tomb by the Jewish reckoning of days starting at evening and continuing into the next day:  Thursday evening/Friday morning is one day, Friday evening/Saturday morning is the second day, Saturday evening/Sunday morning is the third day.  So, I can't speak to the broader understanding of it in Europe, but there's a peek into the evangelical understanding (and as an additional note -- the timeline for resurrection events in my French Bible lines up with that in my English Bible).

The writer has simply inverted the normal word order for stylistic reasons. 

"qu'aurait été baptisé Jésus" = "que Jésus aurait été baptisé" = "that Jesus would have been baptised"

I think the video is correct, it's just the transcription & translation on kwiziq that's wrong, so it could be corrected. 

Hi Cécile,

Does that mean that you think the speaker actually says "il part" rather than "ils partent"? It's a little unclear, but I thought there was a "t" sounded at the end of the word. If you turn on the auto-generated subtitles on the video it shows "il parte", which is clearly wrong, but implies that the voice recognition software detects a "t". Anyway, it's obvious from the meaning that it's the disciples who go to preach the gospel, so logically it has to be "ils partent", whatever the speaker actually says. If you view the video on the youtube site, there is a transcription in the comments which does say "ils partent".