'Forty' in the Bible

But the former governors who preceded me had burdened the people and had taken food and wine from them, in addition to forty shekels of silver. Their associates were also domineering over the people. But I did not behave in this way, due to my fear of God.

For forty years you sustained them. Even in the desert they never lacked anything. Their clothes did not wear out and their feet did not swell.