And the LORD said unto Satan, Whence comest thou? Then Satan answered the LORD, and said, From going to and fro in the earth, and from walking up and down in it. Job 1:7
Trivia: What did Job's wife tell him to do to retain his integrity?
It took the Israelites 40 years to travel from Egypt to Canaan, yet such a journey, even at that time, would have taken no more than a few weeks.
The children of Israel did eat manna forty years. Exodus 16:35
And your children shall wander in the wilderness forty years. Numbers 14:33
He made them wander in the wilderness forty years. Numbers 32:13
Walking through this great wilderness: these forty years. Deuteronomy 2:7
Remember all the way which the LORD thy God led thee these forty years. Deuteronomy 8:2
I have led you forty years in the wilderness. Deuteronomy 29:5
The children of Israel walked forty years in the wilderness. Joshua 5:6
Yea, forty years didst thou sustain them in the wilderness, so that they lacked nothing; their clothes waxed not old, and their feet swelled not. Nehemiah 9:21
I brought you up from the land of Egypt, and led you forty years through the wilderness. Amos 2:10
Google maps says the journey from the Giza Plateau to Jerusalem is 742 kilometers and would take 152 hours to walk. (About 19 days with 8 hours of walking each day.)