Ge-tyhtan

According to the Old English Dictionary:

ge-tyhtan

p. te; pp. ed To educate, teach, instruct; erŭdīre, dŏcēre, instruĕre :-- Ðe ðú hine getyhtest quem tu erŭdiĕris, Ps. Th. 93, 12. Byþ his heorte getrymed and getyhted confirmātum est cor ejus, 111, 7. ge-tyhtan