Eagles Do Not Fly, They Soar
Eagles do not fly like other birds, flapping their wings profusely and using their own strength. Instead, eagles SOAR majestically, making use of the wind current s to gain height. What makes the eagle so special is that she sits on the rock and reads the wind and when the time is perfect she takes off and soars upward with her great wings. There is a special up going wind where the eagle rides the wind and circle higher and higher toward the sky, without effort. She just spreads her wings.
The wind is referred many times in the Bible as the Holy Spirit. We can learn to cooperate with the Holy Spirit and let Him lift us closer to Jesus. The eagle in this case is the Christian who is being lifted by the Holy Spirit up and closer to Jesus. Like eagles, we should learn to ride on the current of the Holy Spirit, instead of relying on our own strength. Only then can we "gain height" to "fly" in the high places. Isaiah 40:31 talks about growing in Christ, that happens when we have fellowship with Him in the Spirit.