@starscythe Probably because in Undertale, he is known as a very lazy person, representing some extreme patience, and the Royal Judge (bit of a fanon term), as in he judges you at the end of your journey, no matter the route, meaning he's quite Just.
@FracturedFaith1 Soph would knock on the door gently, seemingly having come to offer him food, sustenance, and perhaps company. She knocks once more before speaking.
“Soul? It’s me, Soph… please come on out, it’s been days… … Whatever’s going on, Ee can face it together” she would say.