text box to automically include all text

You can crete a text frame and define which paragrsph style is used, how it auto sizes and where it's positioned when text is inserted, regardless of the text source. 

What is the source of the text? Are you placing the text from a file, typing it, or pasting it?

This can be complicated because text has no physical size, unlike an image. Should the text frame be a column, or stretch between the margins, then, once a width is established, the height can be automatic based on the length of the text. 

Perhaps what you want is an Object Style that automatically sizes a text frame. You would need to apply the style after creating the text frame. Below you can see I set the object style to use a width of 24p0 (4 inches) and to adjust the height only. The result is a text frame the width I want and the height of the text.