In the ancient world, a person's right hand carried a special dignity. It was used to confer a permanent blessing (Gn 48:13-18). A king held his staff in his right hand (see Mt 27:29), and a priest's right hand was consecrated (Ex 29:20). A thief's right hand was cut off, thus perpetually reducing his status in society. People shook their right hands to complete a transaction, thereby giving their right hand the power to uphold their word.
The right hand of God also carries a special dignity and power (Ex 15:6, 12; Mt 22:44; Ps 44:4). His right hand is just and true (Ps 48:11). His right hand upholds His people (Ps 18:36; 63:9).
Therefore, when Jesus told the man with the withered right hand to stretch out his hand, Jesus did much more than restore his right hand (Lk 6:10). He also restored the man's dignity and power in society.
Along with our right hand, God gave us free will. We can use our right hand to serve God or to sin (Ps 109:6; 144:8; 2 Sm 20:9ff). Thus Jesus warns us: "If your right hand is your trouble, cut it off and throw it away!" (Mt 5:30) It is better to lose our human power and social dignity than to misuse it and sin against God.
Jesus now sits at the right hand of God (Mk 16:19; Eph 1:20). What will be our destiny? Will we use our right hands to serve the Lord and so be placed at God's right hand? (see Mt 25:34) Or will our entire body be "cast into Gehenna"? (Mt 5:29) Take Jesus' nail-scarred right hand and let Him make your life right.