Albert Barnes on Mark 8:24

I see men as trees, walking. I see men walking; but see them so indistinctly, that but for their motion I could not distinguish them from trees. I cannot distinctly see their shapes and features. Probably our Lord did not at once restore him fully to sight, that he might strengthen his faith. Seeing that Jesus had partially restored him, it was evidence that he could wholly, and it led him to exercise faith anew in him, and to feel more strikingly his dependence on him.

(e) "and said" Jud 9:36, Isa 29:18, 1Cor 13:11,12