Exodus 3:3
And Moses said, I will now turn aside, and see this great sight, why the bush is not burnt.
Cross-reference
Exodus 19:21
Contrast
Exodus 19:21 warns the people not to gaze at God — in contrast, Moses is drawn to turn aside and gaze at the bush.
Acts 7:31
Citation
Acts 7:31 directly recounts the same event — Moses wondered at the sight and drew near to behold it.