1 Corinthians 14:23

Will they not say that ye are mad? (ouk erousin oti mainesqe?). These unbelievers unacquainted (idiwtai) with Christianity will say that the Christians are raving mad (see on "Ac 12:15"; see also "Ac 26:24"). They will seem like a congregation of lunatics.

Read 1 Corinthians 14:23