1 Enoch 103:2
1 Now, therefore, I swear to you, the righteous, by the glory of the Great and Honoured and Mighty One in dominion, and by His greatness I swear to you: 2 I know a mystery And have read the heavenly tablets, And have seen the holy books, And have found written therein and inscribed regarding them: 3 That all goodness and joy and glory are prepared for them, And written down for the spirits of those who have died in righteousness, And that manifold good shall be given to you in recompense for your labours, And that your lot is abundantly beyond the lot of the living.
1 Corinthians 2:1
7 In him we have redemption through his blood, the forgiveness of our offenses, according to the riches of his grace 8 that he lavished on us in all wisdom and insight. 9 He did this when he revealed to us the mystery of his will, according to his good pleasure that he set forth in Christ, 10 toward the administration of the fullness of the times, to head up all things in Christ—the things in heaven and the things on earth.
Notes and References
"... This twinfold claim has analogies with other documents composed during the 2nd century BCE. A similar claim to have received the divine revelation of a “mystery” or “mysteries” is made, for example, in the Hodayot by the hymnist (i.e. 1QHa ix 15, x 15, xii 27, xv 30, xx 11–13) ... According to the Habakkuk Pesher, “all the mysteries of his servants the prophets” have been made known to the Teacher of Righteousness ... See further the claims made by the later pseudepigraphic author of 4 Ezra in 10:38, 12:38, and 14:5. Finally, the possession of secret knowledge is attributed to Jesus as he instructed his disciples (Mk. 4:11–12; Mt. 13:11; Lk. 8:10) and is claimed by Paul in relation to himself and his teaching (Rom. 11:25; 1 Cor. 2:1; 15:51; compare Eph. 1:9; 3:3–5, 9; 6:19; Col. 1:26; 2:2; 4:3) ..."
Stuckenbruck, Loren T. 1 Enoch 91-108 (pp. 519-520) De Gruyter, 2007