5:12 though by this time. Better, although by now. I.e., in consideration of the time they had been believers. milk. I.e., elementary truth (see 1 Cor. 3:1–3). solid food. Deeper truths of the Word; e.g., the teaching about Melchizedek. 5:13 Immature believers do not know about or put into practice teachings of righteousness. 5:14 the mature. Christian maturity involves (1) time (v. 12), (2) growth in the knowledge of the Word of God (v. 13), and (3) experience in the use of the Word in discerning
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