God's promises are made and fulfilled. Sometimes we see their fulfillment, sometimes we don't. But one way or another, God always keeps His promises.
I don't know what I would do if I ever heard the audible voice of God. However, for as well as I know myself I'd probably be incredibly scared or at the very least horribly nervous. Let's just pretend for a moment that Abram felt the same way I assume I would. God's words to him in that moment have a much greater impact on us. He told him, "Do not be afraid, I am your shield, your very great reward." He does afterall know our comings and goings and our words before they ever leave our lips, so I think it's safe to conclude He is pretty aware of our emotional state as well.
That said, the conversation that follows gives us the hope that we need to anchor ourselves in God's promises just as Abram did.
First, God will always bring us out of the land we are living in if it's not where we are supposed to be. This could be a physical place (God brought Abram out of Ur of the Chaldeans) or it could be an emotional state, maybe one of distress or devastation where we are stuck in our thoughts. The key, is to follow Him out just like Abram did.
Second, when the birds of prey start to circle around where God is working, we need to be aware of their presence and shoo them away......in Jesus' name with the Word of God.
Third, when God is up to something big, it is likely that we will feel a thick and dreadful darkness come over us. What better way for our enemy to make us doubtful, fearful, insecure, and hesitant to follow through or believe.
Fourth, God is the one who inflicts the consequences upon those who treat us poorly, and from any awful situation, we come out with great possessions. Like the Israelites we may come out with "gold and animals" or we may come out with things of much greater worth: increased faith, hope, belief, joy, peace, knowledge, trust, etc.
We may not understand and know how God will work it all out, but in the end that doesn't really matter. What matters most is BELIEVING that He will.