God is the master light of all our seeing.

That is, the light by which we see God and spiritual things is a light which comes from God, just as the light by which we see the star comes from the star. In God’s light we see light.

(Jesus, from the Beatitudes in the Bible:) “The pure in heart see God.” … These words of the Master carry us directly away from a religion of externals to a religion which is inward and vital, and which deals at once with life and character. … The religious teacher must be a spiritual oculist whose business is not to furnish light, but to tell men how to remove their cataracts and to adjust their sight; for, behold, God is always visible the moment the inward eye is clear!

 – Rufus Jones, A Dynamic Faith, 1901

How precious is your steadfast love, O God!
All people may take refuge in the shadow of your wings.
They feast on the abundance of your house,
and you give them drink from the river of your delights.
For with you is the fountain of life;
in your light we see light.
O continue your steadfast love to those who know you,
and your salvation to the upright of heart!

Psalm 36: 7-10
Bible, New Revised Standard Version

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Jesus:
“Blessed are the pure in heart,
for they will see God.”

Matthew 5:8
Bible, New Revised Standard Version