I think you will be interested to analyze the Scripture to know the answer to my question:
The Song of Moses the Torah/ Exodus 15:
Moses and Jews said the following words int he song:
14 �The people will hear and be afraid;
Sorrow will take hold of the inhabitants of Philistia.
15 Then the chiefs of Edom will be dismayed;
The mighty men of Moab,
Trembling will take hold of them;
All the inhabitants of Canaan will melt away.
16 Fear and dread will fall on them;
By the greatness of Your arm
They will be as still as a stone,
Till Your people pass over, O Lord,
Till the people pass over
Whom You have purchased.
17 You will bring them in and plant them
In the mountain of Your inheritance,
In the place, O Lord, which You have made
For Your own dwelling,
The sanctuary, O Lord, which Your hands have established.
18 �The Lord shall reign forever and ever.�
The question: when did God give Moses promises about the conquest of the Promised Land/Canaan/Palestine? Why Moses was sure that Jews will posses this Land?