IOLC has doctrine which is based on Augsburg confession. We refuse The Book of Concord, because in this book has a lot from Calvinism. We fully refuse Calvinism, calling our self the true Christ’ church which being reformed from Roman Catholic because of important reasons.
Around the world there are a lot of churches, religious organizations and communities who call themselves “lutheran”. But in reality of nowadays, not all of them are true Lutheran believers.
If you are agree with our doctrine, you are welcome to be a part of IOLC.