I mean for those who are saying this doesn't make sense, perhaps you should re-read some of escanors fights. His entire schtick as a character is overcoming the limits other characters have put on him regarding his strength, mind, body, soul, heart, he overcomes every single limit placed on him in every single fight. That's his entire gimmick. He has never himself stated the limits of his abilities because as the sin of pride he truly believes he has none. And when it comes to a power that is divinely given belief is all you need to power it.