We will show them Our signs in the horizons and within themselves {2}. To the extent that it will become clear to them that it is the truth. Is it not sufficient concerning your Fosterer that He is a Witness over everything?
This verse appears to refer to the tremendous knowledge of cosmology and Biology which human beings have been made to acquire by Allah (SWT)
The exhibition of signs in the horizons and within ourselves may refer to the tremendous burst of knowledge in the fields of cosmology and biology.
