Sirach 24:27

27 He maketh the doctrine of knowledge appear as the light, and as Geon in the time of vintage.

Sirach 24:27 In-Context

25 He filleth all things with his wisdom, as Phison and as Tigris in the time of the new fruits.
26 He maketh the understanding to abound like Euphrates, and as Jordan in the time of the harvest.
27 He maketh the doctrine of knowledge appear as the light, and as Geon in the time of vintage.
28 The first man knew her not perfectly: no more shall the last find her out.
29 For her thoughts are more than the sea, and her counsels profounder than the great deep.

The Brenton translation of the Septuagint is in the public domain.