I answer with a qualified “Yes” – The councils took place and give us an insight to the issues faced by the established church during history and how those issues were dealt with. The answer is “No” if the point of your question is whether we accept the resolutions and outcomes of those councils as binding in the same way as God’s Word. History shows us that in some councils the theological issues were driven by political forces. The councils were human attempts to deal with the issues of the day just as the church today must deal with issues as they arise. To the extent that the issues are relevant today and council decisions do not contradict scripture (the Bible) the decisions are valuable.