how does faustus conjuring rely upon religious references?

Marlowe makes the summoning scene more effective by placing the devils onstage from the start. When Faustus addresses the invisible beings of hell, the audience sees those creatures there in the flesh. Their presence emphasizes what Mephostophilis tells Faustus moments later: devils eagerly wait for people to call on them, hoping to win souls. Faustus believes he's the one in control. When he forces Mephostophilis to leave and re-enter in a Franciscan monk's garb (a little jab at Catholics that the Protestant audience would have found gratifying), he revels in the power he thinks he has: "Now, Faustus, thou art conjuror laureate: / Thou canst command great Mephostophilis" (1.3.32-3). He doesn't seem to understand the implications of what Mephostophilis tells him. The devil does not come because the incantations have power over him. He comes because the sorcerer is ripe prey.