Build a website using two tables in django

I want to create a website. I work in Python and I use django framework. In my database, I have two tables - the first is containing texts and the second containing images.

I want to replace an image in the middle of the text, but I do not know how to use the command inside the page content. Of course, I can write

but it very important for me it's important for me to have the picture in the middle of the content. I specially created two tables, because I did not want to mix the content with the code describing the picture.

Could you help me?