Ephesians 4:3-6
3. Endeavouring to keep the unity of the Spirit in the bond of peace.
4. There is one body, and one Spirit, even as ye are called in one hope of your calling;
5. One Lord, one faith, one baptism,
6. One God and Father of all, who is above all, and through all, and in you all.
Paul here taught that there are seven ones that every Christian should know about. I consider these the basis of the Christian walk. As we study these items, realize these truths are for every believer.
These are the basis of our Christian life, as Hebrews tells us. Every believer should be grounded in these teachings. Click on the following for the full teachings.