Labour not . . . but = Labour for the latter rather than for the former. Figure of speech Heterosis (of Degree). App-6.
meat. Greek brosis, the act of eating (Mat_6:19, Mat_6:20 = "rust "). Not broma = food (Joh_4:34). Compare also 1Co_8:4.
endureth. Greek. meno. Same as "dwelleth", Joh_6:56. See note on "abode", Joh_1:32.
unto. Greek. eis.App-104. Not the same as in verses: Joh_6:5,
everlasting. Greek. aionios. See App-151.
life. Greek. zoe. See note on Joh_1:4, and App-170. the Son of man. See App-98.
him hath God the Father sealed = for Him (= this One) the Father, even God, sealed.
God. See App-98.
the Father. See note on Joh_1:14.
sealed. The Jews discussed "the seal of God", e.g. "What is the seal of the Holy, Blessed God? Rabbi Bibai answered, ' Truth'. But what is 'truth'? Rabbi Bon saith, ' the living God and King eternal'. Rabbi Chaninah saith . ., 'truth is the seal of God'. "Babylonian Talmud, Sanhedr., quoted by Lightfoot, vol. xii, p. 291 (Pitman's ed.)