Take, for instance, the sentences in the sixth chapter:—
"I am the bread of life."
"He that believeth on me hath everlasting life."
"I am that bread of life."
"This is the bread that cometh down from heaven, that a man should eat thereof and not die."
"My flesh is meat indeed, and my blood is drink indeed."
"It is the spirit that quickeneth, the flesh profiteth nothing."
And those in the tenth:—
"I am the door of the sheep."
"I am the good shepherd: the good shepherd giveth his life for the sheep."