On the first day of the eleventh month, in the fortieth year, Moses spoke to the Israelis about everything that the LORD had commanded him concerning them.

Remember how the LORD your God led you all the way these 40 years in the desert, to humble and test you in order to make known what was in your heart, whether or not you would keep his commands.

Your clothes

"The clothes you wore did not wear out, nor did your feet blister during these 40 years.

You sustained them in the wilderness for 40 years. They lacked nothing. Their clothes did not wear out, and their feet did not swell.

"So don't ever worry by saying, "What are we going to eat?' or "What are we going to drink?' or "What are we going to wear?'

And thy shoe

worn-out, patched sandals for their feet, and worn-out clothes. All of their food was dried out and covered in mold.

or a traveling bag for the trip, or an extra shirt, or sandals, or a walking stick, because a worker deserves his food.

General references

Moses was 80 years old and Aaron was 83 when they spoke to Pharaoh.