The author feels rejected by the Lord. Everything seems to show that God is hiding himself from him. That is awful for him. This very thing is the worst for him. Why is the Lord so terribly far away? He cannot understand this. That is also why this terrible thing is mentioned twice in this verse.
Here we find the same complaint as in the beginning of Psalm 22:1–31: My God, my God, why have you forsaken me?
This is how far from God a person can sometimes feel. Jesus experienced this in the most intense form on the cross at Golgotha, where he cried with a loud voice: “Eli, Eli, lema sabachthani?” that is, My God, my God, why have you forsaken me?
One of the forms for the celebration of the Lord’s Supper adds to this: that we might be accepted by God and nevermore be forsaken by him.
To know this can give us something to hold on to when we are going through terrifying depths in our life.
14 O LORD, why do you cast my soul away? Why do you hide your face from me?