The Apostle Paul exhorts Christians to be humble. To think more highly literally means to over think or think above and so to be proud and haughty. The spiritual gifts bestowed by God must not cause spiritual pride. He encourages them to use their spiritual gifts for the blessing of the body of Christ. He acknowledges that it is by God’s grace or unmerited favour that he could serve God. It is the same for them. To think soberly is to exercise sound judgment. Christians are to live humbly before God because all they are and have comes from Him. Christians are endowed with faith by God to exercise their gifts to edify, build up and bless other Christians.