He is the same God who delivered you in the past and performed those mighty miracles for you not so long ago. So why do you not trust Him now? Like David, declare that the same God who delivered me from past dangers will deliver me from the Goliath that stands before me today.
Deuteronomy 1:29-31
29 Then I said to you, “Do not be terrified; do not be afraid of them. 30 The Lord your God, who is going before you, will fight for you, as he did for you in Egypt, before your very eyes,
31 and in the wilderness. There you saw how the Lord your God carried you, as a father carries his son, all the way you went until you reached this place.”
1 Samuel 17:37
37 The Lord who rescued me from the paw of the lion and the paw of the bear will rescue me from the hand of this Philistine.”