How do we know Jesus' teachings are from God?

In John 7:16-17, Jesus states that if anyone desires to do God's will, they will understand that his doctrine is divine and not of human origin. His miracles, the prophetic fulfillments, and the authority with which he taught serve as confirmation of his message. As Bishop J.C. Ryle noted, the willingness to do God's will opens one's heart to understanding the truth of Jesus' message. This central teaching of grace through faith, foundational to sovereign grace theology, asserts that true knowledge of doctrine is granted by God to those who seek Him sincerely.