1Cor 14:34-35: “Let your women keep silence in the churches: and let them ask their husbands at home.”
Application: this is not so much a restriction on the wife, as a requirement on the husband to study.
John Knox on asking questions after sermons:
The Liturgy of John Knox:
“Everie week once, the Congregation assemble to heare som place of the Scriptures orderly expounded. At which tyme, it is lawfull for every man to speake or enquire, as God shall move his harte, and the minister occasion; so it be without pertinacitee or disdayne, as one that rather seketh to profit then to contend. And if so be any contencion rise, then suche as are appointed moderators, either satisfie the partie, or els if he seme to cavill, exhorte hym to kepe silence, referring the judgment therof to the ministers and elders, to be determined in their assemblie or Consistorie before mentioned.”
7 Apr 2012: Questions and answers in church.