Why wouldn't it be?
Jesus put his stamp of approval on the Law, did he not?
Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfill. For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled. (Matthew 5:17-18 KJV)
Why wouldn't it be?
So you believe this is the word of God?
Exodus 21:20-21: "If a man beats his male or female slave with a rod and the slave dies as a direct result, he must be punished, but he is not to be punished if the slave gets up after a day or two, since the slave is his property"