Good evening everybody
Need a wee bit of help with dialogue.
「にわかには信じられなかったが
"I couldn't believe it at first but
世に知られていない力は最強の武器だ」
a power unknown to the world is the greatest weapon"
I don't know what 「にわかには」 means, and the way I translated the first line (in bold) doesn't the context well. Thanks as always