Dilan was in a tricky situation. He was not yet strong enough to obliterate the three Lesser Archangel Gods, not in an instant.
It would take quite a while before the three Lesser Archangel Gods could obliterate the flying island, and thus destroy everything Dilan wanted to protect.
Goldy was able to tell whether he was telling the truth or lying, and she was the strongest of the three.
That made it difficult for him to tell lies or talk around the bush, especially given that Goldy's power also included that he was more inclined to speaking in all honesty.
This was a frustrating set of powers that caused goosebumps to run down his spine.
'Well, it is not like she is asking for something extreme. As long as she doesn't point out the prophecy everything will be fine…in fact, even if she were to ask about the prophecy, it's not like I have to hide it. The Oracle hasn't forced me to sign a Soul Contract with a non-disclosure agreement or something like that…'