To cross one's fingers is a hand gesture commonly used to implore God for protection, as well as to wish for good luck. The gesture is referred to by the common expression "keeping one's fingers crossed" or just "fingers crossed" and has also been historically used in order to allow believers to recognize one another during times of persecution.
The law cannot make a wicked person virtuous…God’s grace alone can accomplish such a thing.
Ron Paul - The Revolution
Setting a good example is a far better way to spread ideals than through force of arms. Ron Paul