Wiktionary
sheds light on
vb. (en-third-person singularshed light on)
Usage examples of "sheds light on".
For example, Faulkner's description of the tiny hamlet of Doane's Mill sheds light on Lena Grove, especially when you realize that Doane's Mill was the biggest town this simple country girl had seen before she began her journey to Jefferson.
Jack's treatment of Piggy calls attention to his dangerous nature and sheds light on his future relationship with Piggy.
Now, we're looking for anything that sheds light on Philip Hawkin's relationship with his stepdaughter.