The phrase "such arrogance" means that someone is behaving in a way that shows excessive or undeserved confidence, often disregarding the feelings or opinions of others. Full definition
1st Samuel 2:3 «Do not keep talking so proudly or let your mouth speak such arrogance, for the Lord is a God who knows and by him deeds are weighed». (ghanapoliticsonline.com)
Such arrogance interferes with one's ability to establish authentic relationships. (religion-online.org)