There is some debate as to why Jesus makes mention of the right hand. Some suggest that the hand is used for sexual stimulation in order to fulfill fantasies. Alternatively, since adultery was considered a form of theft in Judaism, 1 this would naturally link with the hand which is used to take.
30 Et si ta main droite est pour toi une occasion de chute, coupe-la et jette-la loin de toi; car il est avantageux pour toi qu'un seul de tes membres périsse, et que ton corps entier n'aille pas dans la géhenne.