God often gently convicts His people of their sinfulness and rebelliousness even when the sins of His people might seem like an insignificant sin, lest such a sin grow into fruition. But when a nation commits idolatry, God also does not withhold from punishing and rebuking them. In this passage, we learn how to avoid being in opposition or hostile to God and His ways in our daily lives.
In the Bible, to be Holy means always to be set apart. Children of God are regarded as holy because they were set apart for God to live for His glory and also to become more like Jesus Christ. Christian life in that sense, is all about pursing holiness. In this passage, we learn what it means to pursue holiness so that we become like our Heavenly Father and also like our Lord Jesus Christ.