"Only fear the LORD and serve him faithfully with all your heart. For consider what great things he has done for you. But if you still do wickedly, you shall be swept away, both you and your king.” (1 Sam 12:24-25, ESV2011).
“Fear the Lord! Serve the Lord!” These are not any more very common teachings in many Western churches. Rather, God is presented as a sugar daddy. Christianity became more about what can we get from God to spoil ourselves instead of fearing and serving God. However, the concepts of fearing and serving the Lord have dominated both the Old and the New Testaments. Lives of many great man of God like Moses, David, Peter and Paul were all marked with their fear of God and service to God.
Solomon concluded his analysis of life's experiences and life's meaning with “fear God and keep His commandments...” (Ecc 12:13, NKJV).
Jesus' parable of the talents also teach about serving God with fear (Mat 25:14-30). Likewise, Paul's teaching on the gifts of the Holy Spirit also imply our responsibility to serve God according to our calling and gifts (1 Cor 12:1-11).
In conclusion, Christian life is a life of fearing and serving God as much as growing in God's love and grace. Thus do not be fooled by the self-centred feel good sermons or consumer friendly teachings of prosperity preachers. You are here to fear and serve God.