We gladly admit that there is mystery for us in all things while there is no mystery for God in anything. We do not claim to understand even one thing exhaustively. Therefore, we can in ourselves be certain about nothing. But because God understands all things exhaustively, now, “having made known to us the mystery of His will” (Eph. 1:9), we can in Christ be boldly and humbly certain about everything that we do know. “In Your light we see light” (Ps. 36:9). When the people questioned how it was possible that Jesus knew so much, even though He had no formal degrees or “letters” after his name, like a Ph.D. (Jn. 7:15), Jesus explained to the people how He knew what He knew. His explanation gets to the heart of what is the biblical sense mystery. He said, “My doctrine is not Mine, but His who sent Me. If anyone wills to do His will, he shall know concerning the doctrine, whether it is from God or whether I speak on My own authority” (Jn. 7:16-27). Upon this basis He then commanded the people to “judge with righteous judgment” (Jn. 7:24). To judge rightly or righteously is possible for anyone who “wills to do His will.” Being willing to do God’s will and not our own is the only sure basis upon which we “shall know” anything for certain. The debate surrounding Jesus (and thus also by implication, the debate surrounding us as Basileians or of any believer who comes across as irritatingly “authoritative” to citizens of the Fallen World System) is that Jesus taught with an authority that was rock-solid and certain. He was able to do so because the source of authority of His “doctrine” was “from God.” He was not His “own authority.” Jesus operated by the One-Source View of authority. Practically, the One-Source View is the view of anyone who “wills to do His will.” Therefore, Jesus commanded the people to use the One-Source View in righteously judging whether He Himself was indeed using the One-Source View or not. He refused to allow them to judge Him on the basis of their own autonomy. Experiencing the Father “having made known to us the mystery of His will” is the basis of true kingdom authority. All knowledge not based on this kind of mystery is “falsely called knowledge” (1 Tim. 6:20).
Also see Body of Christ, Certain Knowledge, Council of the Lord, Eucharist, and One-Source View.