Two texts of scriptures which form the bases of Bishop's philosophy of ministry are Phi.1: 20-27 and Col.1: 27-29 from where the mission statement of WGIC is derived: "... We preach Him, warning and teaching every man to present everyone complete in Christ."

Following the model of Christ, Bishop Osei-Tutu's life is contextualized in Christ (Phi.1: 20-27). To him the Gospel is the purpose or rational behind his existence, activities, and interests. Therefore, the Gospel of Jesus Christ is central to Bishop's teaching and practices. Also being convinced of the power of God's Word, he believes that man's Liberty is in the Truth (John 8: 32) therefore his messages are rooted in the Word of God and he challenges his audience to buy the truth (invest money, time and effort to get the word in them) and sell it not (Pro.23: 23).