The second main part of the Gospel of Mark, the passion narrative, begins
according to the transcription, like the first part, begins with an overture (13:3-37), in which motifs from the overture to part 1 are taken up again.
The four disciples Peter, Andrew, James and John are mentioned in 13:3. The keyword arche (=beginning, foundation) from 1:1 returns in 13:8.
The question when? from 13,4 had already been answered in 1,15: the time is now fulfilled.