'Disturbed' in the Bible

Therefore thus says the Lord God,“Behold, I am laying in Zion a stone, a tested stone,A costly cornerstone for the foundation, firmly placed.He who believes in it will not be disturbed.

For thus says the Lord to me,“As the lion or the young lion growls over his prey,Against which a band of shepherds is called out,And he will not be terrified at their voice nor disturbed at their noise,So will the Lord of hosts come down to wage war on Mount Zion and on its hill.”