Full of divine knowledge
If your eye is thus single, thus fixed on God, your whole body shall be full of light. Your whole body, all that is guided by the intention, as the body is by the eye. All you are, all you do: your desires, tempers, affections, your thoughts and words and actions. The whole of these shall be full of light, full of true, divine knowledge. This is the first thing we may here understand by light. In his light you shall see light (Psalm 36:9). He who of old commanded light to shine out of darkness shall shine in your heart (2 Corinthians 4:6). He shall enlighten the eyes of your understanding with the knowledge of the glory of God (Ephesians 1:18). His Spirit shall reveal to you the deep things of God (1 Corinthians 2:10). The inspiration of the Holy One shall give you understanding and cause you to know wisdom secretly (Psalm 51:6). Yes, the anointing which you receive of him shall abide in you and teach you of all things (1 John 2:27).
1771 text
3. If thine eye be thus single, thus fixed on God, thy whole body shall be full of light. Thy whole body,――All that is guided by the intention, as the body is by the eye. All thou art: all thou dost: thy desires, tempers, affections; thy thoughts and words and actions. The whole of these shall be full of light: full of true, divine knowledge. This is the first thing we may here understand by light. In his light thou shalt see light. He which of old commanded light to shine out of darkness, shall shine in thy heart. He shall enlighten the eyes of thy understanding, with the knowledge of the glory of God. His Spirit shall reveal unto thee the deep things of God. The inspiration of the Holy One shall give thee understanding, and cause thee to know wisdom secretly. Yea, the anointing which thou receivest of him, shall abide in thee and teach thee of all things.