God’s Face Never Ceases to Shine
Psalm 119:135 (ESV) … “Make your face shine upon your servant, and teach me your statutes.”
The sun always shines. It shines even on the dullest day. Even when it is pouring rain, the sun is still shining. A breath from heaven can blow away the clouds.
Just so, God’s face never ceases to shine on us. His smile is warm and bright even when circumstances arise that seem to obscure Him from us. Satan can trap us in some error, the flesh can cause us to fall, the world can oppress us, just as it did the psalmist, as he says in the previous verse. Or as the earth, rotating on its axis, takes us away from the sun and plunges us into darkness, so we ourselves can turn away from God, following the natural laws of our wayward hearts. But God does not change.
“Make Thy face to shine upon Thy servant.” The psalmist felt that some dark, obscuring cloud had come between him and his God. He wanted that cloud removed.
So might David have prayed after his sin with Bathsheba, when the darkness rolled in, when he sat on his throne terribly conscious that God was no longer shining on him, acutely aware of what had happened to King Saul. After his repentance he was willing once more to be taught of the Lord.
Sun of my soul, Thou Saviour dear,
It is not night if Thou art near;
Oh, may no earth-born cloud arise
To hide me from my Saviour’s eyes. 
 Phillips, J. (2012). Exploring Psalms 89–150: An Expository Commentary (Vol. 2, Ps 119:135). Kregel Publications; WORDsearch Corp.