So you've started thinking about what you want included in your ceremony but you are wondering, what legally needs to be said? Here's what must be included to make your marriage legal. In order to make your marriage official under Australian law, the following sentences (or words to the same effect) must be included in your ceremony: (Celebrant introduction) I am duly authorised by law to solemnise marriages according to law. Before you are joined in marriage in my pres