We humans have 5 senses in which to contact the physical world. They are the senses of seeing, smelling, touching, tasting and hearing. One of the most powerful senses of them all is that of sight. The reason I say this is that in the Garden of Eden, it was sight that caused Eve to originally fall into sin.

“When the woman ‘saw’ that the fruit of the tree was good for food and pleasing to the eye, and also desirable for gaining wisdom, she took some and ate it. She also gave some to her husband, who was with her, and he ate it. Then the eyes of both of them were opened, and they realised they were naked; so they sewed fig leaves together and made coverings for themselves.” Genesis 3:6-7

“When she SAW that the fruit ..” The power of sight can be used for and against us in this life. God and the Devil both know how powerful our sense of sight is and how it can influence us for both good and evil.