Moses reminded Israel about the report from the Promised Land:

“‘It is a good land which the Lord our God is about to give us.’ Yet you were not willing to go up, but rebelled against the command of the Lord your God…”
Deuteronomy 1:25b-26 NASB

Egypt is a picture of natural life without God. By the Blood (of Christ) the people were saved and were taken out of Egypt. The wilderness is the long process where God gives and chastens, blesses and commands. And the trials are to prepare Israel for Canaan, the good land that is a type of the kingdom.

Verse 26 is the key: the people were not ‘willing’ to go in.