[3-4]: Cf. Matt. XVI.18: ego dico tibi quia tu es Petrus et super hanc petram aedificabo ecclesiam meam ‘I say to thee that thou art Peter, and upon this rock I will build my church’; Pétr 6/9-11: ek segi þer, at þu ert steinn, ok yfir þann steinn mun ek smiða mina kristni ‘I say to you that you are a rock, and over that rock I will build my Christianity’. (See st. 32/5-6 and Note.)