Because of the conspiracy against the Lord they were cursed that generation by not entering into the land that God promised them They will die in the wilderness and only Joshua and Caleb and their generation who obeyed the Lord's commands will enter into the land that the Lord promised them.
The Israelites were overcome with grief and tried to rectify their mistakes but there repentance was too late.
Psalm 90 a beautiful Psalm to read. Verse 12 Teach us to number our days carefully so that we may develop wisdom in our hearts.
I just love Numbers 15: 38 - 41
Speak to the Israelites and tell them that through out their generations they are to make tassels for the corners of their garments and put a blue cord on the tassel at each corner. These will serve as tassels for you to look at, so that you may remember all the Lord's commands and obey them and not become unfaithful by following your own heart and your own eyes. This way you will remember and obey all My commands and be holy to your God. I am the Lord your God who brought you out of the land of Egypt to be your God: I am the Lord your God"