Fresh off instructing the Roman Christians to cease judging one another, the Apostle Paul drives home his instruction by telling them to refrain from placing any stumbling blocks before each other as well. Instead, they were to focus on what matters in the Christian faith, which is to live by faith and build one another up in the faith. Why? Because not all Christians are equally mature, and some take more time and nurture than others when it comes to understanding the faith they profess, as God works in everyone's lives to form and shape each individual to be God-honoring servants of Jesus Christ. Those who refuse or fail to comply with Paul's command are considered to be acting unfaithfully and hence destroying God's work.