"Spiritual knowledge is like a house built in the midst of secular and pagan knowledge, in which there is laid up, like a solid and well-secured chest, the knowledge of the inspired Scriptures and the inestimable riches they contain. Those who enter into the house will never at all be able to see those treasures unless this chest is opened for them. But it does not belong to human wisdom (cf. I Cor. 2:13) ever to be able to open it, so that the riches of the Spirit deposited in it remain unknown to all who are worldly."

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When one has looked upon Jesus, though he be of little stature like Zacchaeus of old (cf. Lk. 19:3), and climb up on the top of the sycamore tree by mortifying his members which are upon the earth (cf. Col. 3:5), and having risen above the body of humiliation, then he shall receive the Word, and it shall be said to him, This day has salvation come to this house (cf. Lk. 19:9). Then let him lay hold on the salvation, and bring forth fruit more perfectly, scattering and pouring forth rightly that which as a publican he wrongly gathered.

— Gregory of Nazianzus