Mark 8:17

And Jesus perceiving it saith unto them, Why reason ye, because ye have no bread? do ye not yet perceive, neither understand? have ye your heart hardened?

The last clause of this verse carries the implication that the apostles had, in some degree, been hardened; and this would account for their failure to petition the Lord on behalf of the hungry multitude. The attitude of the world's Pharisees and Herods was somewhat with them. And what was the connection between the Pharisees and Herod Antipas, mentioned a moment earlier? To both classes, the world was all that mattered. The only kingdom was an earthly one.

Do ye not yet perceive ... The apostles' perception had failed on two counts: (1) They had failed to perceive that Christ could and would supply bread for the four thousand men. (2) They had failed to perceive that the one loaf which they had on board, WITH JESUS, was far more than enough! They had not learned the true lessons which their experiences were designed to teach. In this, the perceptive words of Barclay are significant. He said:

Too often experience fills us with pessimism, teaches us what we cannot do. ... But there are other experiences. Sorrow came, and we came through it still erect. Temptation came, and somehow we did not fall. Illness took us, and somehow we recovered. A problem seemed insoluble, and somehow it was solved. We were at our wits' end, and somehow we went on. We reached the breaking point, and somehow we did not break. We, too, are blind.[6]