Hebrews 5:12-14 New American Bible (Revised Edition) (NABRE)
12 Although you should be teachers by this time, you need to have someone teach you again the basic elements of the utterances of God. You need milk, [and] not solid food. 13 Everyone who lives on milk lacks experience of the word of righteousness, for he is a child. 14 But solid food is for the mature, for those whose faculties are trained by practice to discern good and evil.
New American Bible (Revised Edition) (NABRE)
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