Trust
"As you can see, if I exert a little bit of force that the Soulsilver cannot resist, it will simply let my hand through without any problems. As for the spot where my arm went through, you don't need to fear as the armor will rebuild itself automatically in no time at all." Roice explained calmly and slowly retreated his arm before placing it back on the spot where his hand went through just a moment ago.
"Haha! You don't have to feel so surprised. This is only possible as no soul is attached to the armor, thus even a little bit of force is enough to get through its defense." Roice laughed gently when he saw Khal's shocked face.
However, Khal still stared at the armor with a stupified expression for several seconds before something clicked in his brain, causing his eyes to lit up with realization.
"It seems you finally understood." Roice nodded with a smile.