John Trapp on 1 Corinthians 11:28

Verſe 28. Let a man examine] A Metaphor from Metallaries or Lapidiſts, as they try their mettals or precious ſtones, and do it exactly, that they be not cozened, ſo here, men muſt make an exact ſcrutiny.

And ſo let him eat] After preparation, participation. The Heathens had their caena pura, the night before their Sacrifices. The Ruſſians receive children after ſeven years old to the Communion, ſaying,Breerwoods Enquit. 135. that at that age they begin to ſin againſt God. But can they ſay, that at that age they can examine themſelves, and receive preparedly? Chryſoſtome calleth the Lords Table, that dreadfull table, [non-Latin text not transcribed] and the Ancients call the Sacraments dreadfull myſteries.