Which preposition to use with mystagogues

of Occurrences 1%

In some way or another, then, Michelangelo used the thought of death as the mystagogue of his spirit into the temple of eternal things[Greek: ta aidia], die bleibenden Verhältnisseand as the means of maintaining self-control and self-coherence amid the ever-shifting illusions of human life.

Which preposition to use with  mystagogues