Eyes opened to see the spiritual world
“Then Elisha prayed and said, "O LORD, I pray, open his eyes that he may see " And the LORD opened the servant's eyes and he saw; and behold, the mountain was full of horses and chariots of fire all around Elisha.” (2 Cor. 16:17)
There is a spiritual world that we cannot see unless our “spiritual eyes” are opened to see it. In the above passage, Elisha’s servant was given the opportunity to see the horses and chariots of fire that were all around him. Whenever a person turns to the Lord, he then is able to “see” spiritual things because the veil of blindness is removed.
“…whenever a person turns to the Lord, the veil is taken away.” (2 Cor. 3:16)
“Then their eyes were opened and they recognized Him…” (Luke 24:31)
The eyes of your heart may be enlightened to know what is the hope of His calling
“I pray that the eyes of your heart may be enlightened, so that you will know what is the hope of His calling, what are the riches of the glory of His inheritance in the saints…” (Eph. 1:18)
Therefore…
“For God, who said, "Light shall shine out of darkness," is the One who has shone in our hearts to give the Light of the knowledge of the glory of God in the face of Christ.” (2 Cor. 4:6)