What three things did unionast men who signed the covenant agree to?

Unionist men who signed the covenant agreed to uphold the principles of the Union with Great Britain, maintain their Protestant faith, and resist any attempts to implement Home Rule for Ireland. They pledged to stand together in defense of these commitments, emphasizing their loyalty to the British crown and their opposition to any measures that threatened their political and religious identity. The covenant was a significant expression of their collective resolve during a time of political tension in Ireland.