Hands in the Bible represent power, the force with which things are put into action. To be specific, they represent the power of spiritual good -- which is the love of others and serving others -- expressed through spiritual truth -- which is an understanding and knowledge of what it is to love and serve others. This is in contrast to the feet, which represent power on the natural level, and a “rod,” which represents the power of the hand passed down into external or natural ideas. In a few cases in the Bible, hands also represent communication and a drawing together. This is true when people lift their hands to heaven or to Jehovah, and also when the Lord touches children or touches people to heal them.

7309. 'And the rod which was turned into a serpent, take in your hand' means the same power as before. This is clear from the meaning of 'the rod' as power, dealt with in 4013, 4015, 4876, 4976, 7026 - the same power as before being meant by its saying that he was to take 'the rod which was turned into a serpent'; and from the meaning of 'hand' also as power, but spiritual power, from which natural power, which is 'the rod', springs. Both kinds of power are dealt with in 6947, 7011.