Conversation so far:
What interesting information is there about Grigori Rasputin's conversion?
In 1897, Rasputin developed a renewed interest in religion, and left Pokrovskoye to go on a pilgrimage.
Where did he go on pilgrimage to?
Holy Znamensky Monastery at Abalak and to Tobolsk's cathedral.
Did he have a reason for goin on pilgrimage?
His reasons for doing so are unclear.
How old was he when he went on pilgrimage?
In 1897.
Did he ever go back?
He returned to Pokrovskoye a changed man.

Question: How had he changed when he returned?
Self-contained rewrite: How had Grigori Rasputin changed when he returned?