When Leviticus speaks of land, we need to be cautious not to think we can just take people's land from them. Texts about possessing land have been misused by generations of people and to think that somehow religious people continue to hold the ability to possess land and take it away from people is a problem. First of all, Leviticus is trying to show Israel, and us by extension, that land is not ours. Who does it belong to? Read this post and find out from Leviticus 21 who the land belongs to.
In the CBS TV show "Living Biblically" the main character tries earnestly to take the Bible literally, including stoning adulterers. Jesus followed the Torah, but when he met people caught in adultery, what did he do? Leviticus 20 includes some very sobering kinds of punishments for sins like adultery, but in this post we also remember the Rabbi who said to the woman, "Where are your accusers?" and "Go and leave your life of sin."
A big key that helps understand the Sermon on the Mount is to pay attention to Jesus saying, “For I tell you that unless your righteousness surpasses that of the Pharisees and the teachers of the law, you will certainly not enter the kingdom of heaven. In this post Greg Taylor points to six ways Jesus declares that we are to "surpass the form of righteousness" practiced by religious people.