Good thing that Celegorm was there!!

[Maédhros]

From the Published Silmarillion

Then King Felagund spoke before his people, recalling the deeds of Barahir, and his vow and he declared that it was laid upon him to aid the son of Barahir in his need, and he sought the help of his chieftains. Then Celegorm arose amid the throng, and drawing his sword he cried: 'Be he friend or foe, whether demon of Morgoth, of Elf, or child of Men, or any other living thing in Arda, neither law, nor love, nor league of hell, nor might of the Valar, nor any power of wizardry, shall defend him from the pursuing hate of Fëanor's sons, if he take or find a Silmaril and keep it. For the Silmarils we alone claim, until the world ends.'
Many other words he spoke, as potent as were long before in Tirion the words of his father that first inflamed the Noldor to rebellion. And after Celegorm Curufin spoke, more softly but with no less power, conjuring in the minds of the Elves a vision of war and the ruin of Nargothrond. So great a fear did he set in their hearts that never after until the time of Túrin would any Elf of that realm go into open battle; but with stealth and ambush, with wizardry and venomed dart, they pursued all strangers, forgetting the bonds of kinship. Thus they fell from the valour and freedom of the Elves of old, and their land was darkened.

It sounded a little bad when you first read this but, imagine if Celegorm and Curufin were not there and that Finrod would have gone forth with an army of Nargothrond towards Angband. What hope would they have had against Morgoth? If the combined forces of Fingon and Maitimo could not win the day against Angband what could Nargothrond have done?
I know that the population of Nargothrond was the biggest of any Ñoldorian kingdom but still, what hope did they have?

Good thing that Celegorm and Curufin were there.