Luke 10:19

Behold, I give you authority to trample on serpents and scorpions, and overall the power of the enemy, and nothing shall by any means hurt you.

Jesus sent His disciples out, giving them power in His name. They went having Faith in the word, and Jesus is the word. The authority Jesus gave to the disciples He gave to us also when we walk by faith. We are not meant to be defeated by the power of the enemy, but we take authority over adversities. Our faith is meant to move mountains not hide behind them.