Here you can write a short presentation of who you are. Something easy and catchy that make people want to find out more about you and keep scrolling down. This will be their first impression of you and your site.
Think about how you want to communicate with your visitors. Do you want to distance yourself to them - writing about yourself in third person? Or do you want to communicate with them in a personal way - to build a relationship with your audience and create engagement?
This is also something you should think about through all your channels. Your website will be one of them, and together they will all decide the visitors impression of you.
The clearer purpose you have with your channels, the easier it will be to plan and create content along the way.