Deuteronomy 8:14-16

14 athen your heart be lifted up, and you bforget the Lord your God, who brought you out of the land of Egypt, out of the house of slavery, 15who cled you through the great and terrifying wilderness, dwith its fiery serpents and scorpions eand thirsty ground where there was no water, fwho brought you water out of the flinty rock, 16who fed you in the wilderness with gmanna that your fathers did not know, that he might humble you and test you, hto do you good in the end.
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