Chasidut zu Dewarim 7:17

Deuteronomy 7,17. “When you will say in your heart: ‎‎‘seeing that these nations are so much more numerous than I, ‎how can I dispossess them? Do not be afraid.’” It is worth ‎our while to look at Rashi who focuses on the word ‎כי‎ at the ‎beginning of our paragraph. He insists that in this instance the ‎word ‎כי‎ is to be understood as ‎דלמא‎, “maybe, perhaps.”‎
‎Rashi has touched on an important psychological ‎principle, namely that whenever we encounter some difficulty in ‎carrying out G’d’s commandments, i.e. serving Him with all our ‎heart, fear is the greatest enemy to serving G’d wholeheartedly. If ‎we can resist fear, G’d will help us to overcome any of these ‎supposed difficulties to serving Him. Questions such as “how can ‎we overcome such a problem as being vastly outnumbered,” are ‎legitimate questions. However, we must not allow such questions ‎to cause us to become fearful of carrying out G’d’s will. Moses’ ‎remedy in three short words is ‎לא תירא מהם‎, “do not be afraid of ‎them!” If you can master your fear you will certainly be able to ‎drive them out, to dispossess them!”‎