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John 6:63
It is the Spirit who gives life; the flesh profits nothing. The words that I speak to you are spirit, and they are life.
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1 Corinthians 3:2
I fed you with milk and not with solid food; for until now you were not able to receive it, and even now you are still not able;
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Hebrews 5:12-14
For though by this time you ought to be teachers, you need someone to teach you again the first principles of the oracles of God; and you have come to need milk and not solid food. For everyone who partakes only of milk is unskilled in the word of righteousness, for he is a babe. But solid food belongs to those who are of full age, that is, those who by reason of use have their senses exercised to discern both good and evil.
