God rescues the weak and vulnerable through us, through our obedience to His word and what He speaks to our heart. Fear keeps us from being odedient. Fear of what God may put on our hearts - Fear that we may have to step out of our comfort zone - Fear that people will think that we have totally lost our mind.
God longs for us to overcome our fear, and align our heart and mind with Him. God does not call the equipped, He equips the called!