1 Corinthians 14:16

Unlearned. Gr. ididtes, “one without professional knowledge,” “unskilled,” “uneducated.” In the context here it seems to refer to one who is “unlearned” as far as the gift of tongues is concerned. If one who could speak in tongues exercised that power in the church without an interpretation, then others present would be unable to take part in the worship. Thus they would be deprived of a share in the blessing of the service.

Amen. Gr. amen, from the Heb. ’amen, meaning, “firm,” “established” (see on Matt. 5:18). When used by the congregation at the close of an address or a prayer it expresses approval of, or agreement with, what has been (see 1 Chron. 16:36; Neh. 5:13; 8:6). It was also said by the congregation at the conclusion of a prayer to denote confidence that the prayer would be heard (see Deut. 27:15-26; Neh. 8:6). Much importance was attached to this practice; this is proved by statements of some of the rabbis, for example:

“Greater is he who answers, Amen, than he who says the blessing” (Talmud Berakoth 53b, Soncino ed., p. 325). “He who responds, ‘Amen, May His great Name be blessed,’ with all his might, his decreed sentence is torn up.” “He who responds ‘Amen’ with all his might, has the gates of Paradise opened for him” (ibid. Shabbath 119b, Soncino ed., p. 589). If the word was used without due consideration, it was called an “‘orphaned’ Amen” (ibid. Berakoth 47a, Soncino ed., p. 284). The custom of responding with an “Amen” was common in the synagogue from which it was adopted by the early Christian church (see Justin Martyr First Apology 65; Tertullian De Spectaculis 25).