This was neither a gift nor a reward, Marvin had no reason to refuse.
After accepting the projection, Marvin had many questions he wanted to ask Odin, but the scene before him suddenly began to spin, and waves of dizziness came over him. Just as he was about to leave, he heard Odin say, "Near where Luca sealed the Kraken, there is another seal, which can help you in times of crisis."
Whoosh!
Everything went dark before his eyes, and when he opened them again, Marvin found himself back in the abandoned church. In front of him, a member of the Blood Tribe who looked exactly like Edward held the Divine Communication White Candle, forcibly interrupting the connection between the three of them and the Divine Kingdom.
"Time's up." The Blood Tribe handed the Divine Communication White Candle and the pocket watch back to Marvin.