# The judge may give him forty blows

"The judge may say that they should beat the guilty person 40 times" 

# but he may not exceed that number

"but the judge may not order them to beat him more than 40 times"

# for if he should exceed that number and beat him with many more blows

"because if the judge orders them to beat him many more than 40 times"

# then your fellow Israelite would be humiliated before your eyes

"then the judge would humiliate your fellow Israelite in front of all of the people of Israel" 

# humiliated before your eyes

"humiliated, and you would all see it"