35. The keys of the kingdom of the heavens were given to Peter, because he represented the Lord as to Divine Truth; and this is what is meant by "rock," throughout the whole of the Sacred Scripture. On this account [it is said], "Upon this rock," that is, on this Divine Truth, "will I build My Church," namely, the truth that the Lord is "the Son of the living God." It shall be shown from the Word, that "rock" has this signification. ("Rock" in the Word: Exod. xvii 6; xxxiii 21, 22; Num. xx 8-11; Deut. viii 15; xxxii 4-37; 1 Sam. ii 2; 2 Sam. xxii 2, 3, 32, 47; xxiii 3; Ps. xviii 2, 31, 46; xxviii 1; xxxi 2, 3; xl 2; xlii 9; lxii 2, 7; lxxviii 16, 20, 35; lxxxix 26; xcii 15; xciv 22; xcv I; cv 41; Isa. ii 10; xxii 16; xlii II; Ii 1; 1 Cor. x 4). ("Fissures of the rock" denote falsified truths, Rev. vi 15, 16; Isa. ii 19; Jer. xvi 16; Song of Solomon, ii 14; Isa. xlviii 21; Jer. xxiii 29; xlix 16; Obad. ver. 3; besides in the Gospels.) In this wise also some of the Fathers explained it (see Formula Concordia?, p. 345).