The Eagle Christian Symbol represents the resurrection and renewal.
The Easton Bible Dictionary provides the following definition, meaning and emblem for the Eagle Christian Symbol in the Bible.
Isaiah 40:31 - But they that wait upon the LORD shall renew their strength; they shall mount up with wings as EAGLES they shall run, and not be weary; and they shall walk, and not faint"
Referred to for its swiftness of flight (Deut. 28:49; 2 Sam. 1:23), its mounting high in the air (Job 39:27), its strength (Ps. 103:5), its setting its nest in high places (Jer. 49:16), and its power of vision (Job 39:27-30).
This "ravenous bird" is a symbol of those nations whom God employs and sends forth to do a work of destruction, sweeping away whatever is decaying and putrescent (Matt. 24:28; Isa. 46:11; Ezek. 39:4; Deut. 28:49; Jer. 4:13; 48:40).
It is said that the eagle sheds his feathers in the beginning of spring, and with fresh plumage assumes the appearance of youth. To this, allusion is made in Ps. 103:5 and Isa. 40:31. God's care over his people is likened to that of the eagle in training its young to fly (Ex. 19:4; Deut. 32:11, 12).
There have been observed in Palestine four distinct species of eagles, (1) the golden eagle (Aquila chrysaetos); (2) the spotted eagle (Aquila naevia); (3) the common species, the imperial eagle (Aquila heliaca); and (4) the Circaetos gallicus, which preys on reptiles. The eagle was unclean by the Levitical law (Lev. 11:13; Deut. 14:12).