What is the significance of the phrase 'not of man' in the gospel?

The phrase 'not of man' is crucial for understanding the nature of the gospel. It indicates that human beings cannot create, navigate, or alter the path of salvation; it is solely a work of divine sovereignty (Galatians 1:11-12). This distinction emphasizes that salvation is not based on human ingenuity or merit, but rather upon God's purpose and grace, as Paul passionately clarifies in his exhortation to the Galatians. This perspective liberates us from the burden of self-reliance and propels us towards complete trust in God's plans and promises for redemption.