Yet that could not occur till adolescence or thereafter. Matthew 19:5f. This was still the case, even after the fall. Genesis 17:26 & 18:24-32 & 21:20f cf. Exodus 12:3f & 12:24-27 & 12:37 with First Chronicles 21:5 & Proverbs 22:6 and Luke 2:40-49. Furthermore, this would still continue to be the case – also after Calvary. First Corinthians 3:2 & 10:8-21 & 11:28-32 & 13:11 & 14:20 & 16:13 – cf. Ephesians 6:1-4; Colossians 3:20f ; Hebrews 5:12 to 6:2f.
Before Calvary – minors were never permitted to eat the meat of the Passover lamb. Since then – it is similarly impermissible for minors to eat of the Lord’s Supper which precisely in Christ’s Calvary week replaced that ancient sacrifice.