I believe that one of Satan’s greatest weapons against us is his lies and deceptions. Through the use of lies and deceptions, his objective is to get us to be afraid and to doubt God. As well, he wants us to question God’s sovereignty over our lives, his many promises to us, and his awesome grace, mercy, forgiveness, provisions, spiritual blessings, his unending love, and his continued presence with us. So, his goal, for one, is to get us to be afraid, to get our eyes off of Jesus, and to get us to look at our circumstances instead.
I believe this is why there are so many encouragements in scripture to not be afraid; to not fret; to not worry, but to put our trust and hope in God, and in God alone. As well, we are reminded much in scripture of all God’s provisions, protection, guidance, hope, counsel, encouragement, and blessings. Although he may not always protect us physically or even emotionally from persecution, sickness, injury, betrayal, etc., he promises to always be with us - to comfort, encourage, guide, direct and to teach us in the way we should go. So, we never have to be afraid, because our God will give us all we need to make it through every circumstance. He will carry us through, and he will bring us safely home to glory.