John 16:29

His disciples... now speakest thou plainly.

The last words uttered seemed to the disciples plain and simple. They thought that they gave the key to all the "proverbs" before spoken. He had come from God, into the world, now he would leave the world, and return to God. That seemed plain. Yet the disciples did not understand so well as they supposed. Their stumbling while the Lord was in the hands of his enemies, and their fear, and their despair while he lay in the tomb, shows that they did not understand. Augustine says: "They so little understood that they did not even understand that they did not understand. For they were babes."