As it does for the rest of the Pentateuch, universal Jewish and Christian tradition attributes the authorship of the book of Numbers to Moses. Moses is the central figure within the book, and in at least two instances Numbers mentions him recording events by the Lord’s commands.
https://insight.org/resources/bible/the-pentateuch/numbers
The events of the book began in the second year after the Israelites departed Egypt, as they camped at Mount Sinai around 1444 BC. The narrative ends thirty-eight years later “in the plains of Moab by the Jordan opposite Jericho” (36:13) in 1406 BC.
https://insight.org/resources/bible/the-pentateuch/numbers
Numbers takes the reader on a long and winding path through a desert of excruciating detail. The book records census results for all twelve tribes not once, but twice; it documents priestly instructions for handling the Ark of the Covenant and the tabernacle; and it even spells out the placement of the tribes when they camped. But through it all, we cannot doubt God’s unfailing direction over the nation.
https://insight.org/resources/bible/the-pentateuch/numbers
In this book, the people of Israel tested God’s patience, and He in turn tested their endurance and faithfulness. Though the people failed many times, God showed His own faithfulness by His constant presence leading the way: through a cloud by day and a pillar of fire by night.
https://insight.org/resources/bible/the-pentateuch/numbers
Do you see any resemblance between the grumbling, rebellious Israelites and yourself? How can you avoid following their example? With humility and sincerity, pray for a soft heart, open to God’s guiding hand.
https://insight.org/resources/bible/the-pentateuch/numbers