² tn Grk “great is the mystery of [our] religion,” or “great is the mystery of godliness.” The word “mystery” denotes a secret previously hidden in God, but now revealed and made widely known (cf. Rom 16:25; 1 Cor 2:7; 4:1; Eph 1:9; 3:3, 4, 9; 6:19; Col 1:26-27; 4:3). “Religion” (εὐσέβεια, eusebeia) is a word used frequently in the pastorals with a range of meanings: (1) a certain attitude toward God – “devotion, reverence”; (2) the conduct that befits that attitude – “godliness, piety”; and (3) the whole system of belief and approach to God that forms the basis for such attitude and conduct – “religion, creed.” See BDAG 412-13 s.v.; 2 Tim 3:5; 4 Macc 9:6-7, 29-30; 15:1-3; 17:7. So the following creedal statements are illustrations of the great truths that the church is charged with protecting (v. 15).