Monday of Quinquagesima week: 2 Corinthians 10.
Paul in 1 Corinthians 11:28 famously exhorts the Corinthians,
Let a man examine himself (δοκιμαζέτω δὲ ἄνθρωπος ἑαυτὸν) and so let him eat of the bread and drink of the cup. (1 Cor. 11:28)
I’ve argued elsewhere that δοκιμάζω in this connection means, not examining, but meeting an objective standard or test by correcting one’s observable walk, one’s life and conduct with others in the church. Thus, Paul’s command is equivalent to: “You’re eating the one loaf, now show by your behavior that you’re part of the one body.” Subjective self-examination simply isn’t in view at all.
Of course, many (not all) opponents of paedocommunion take the verb to denote a subjective process of “asking oneself if one really has faith” — this being a private intellectual inventory taken in one’s own head during one’s preparation for partaking of the Lord’s Supper. I have even sat in a room with two men who called themselves paedocommunionists who I’m pretty sure still engage in this sort of procedure.
This procedure seems to me to be completely ruled out by 2 Corinthians 10:18, which states:
οὐ γὰρ ὁ ἑαυτόν συνιστάνων, ἐκεῖνός ἐστιν δόκιμος, ἀλλὰ ὅν ὁ κύριος συνίστανησιν.
This one is not approved (δόκιμος, the cognate adjective of δοκιμάζω, the verb in 1 Cor. 11:28), who commends himself, but the one whom the Lord commends.
Thus, subjective self-examination won’t make you δοκιμός. It is not the way to obey Paul’s command in 1 Corinthians 11:28 at all. In the context of 1 Corinthians 11, the way to δοκιμάζω yourself is to welcome your brothers and sisters in Christ to the table — all of them who haven’t been excommunicated, no matter how young.