Not at all. Who can understand this book? All who are counted as His servants in the Lord’s Church need to read, hear and keep / obey these things in the book – and there is blessing for them. Incidentally, every believer is the Lord’s servant – not always the “full time” minister. It is for the believer for whom Jesus was (crucified and rose again as the Saviour), Jesus is (the Priest and King) and Jesus to come (as the bridegroom for taking His bride home to be with Him for ever). Every believer is saved, is being saved and will be saved!