John 5:30

This verse is transitional. It concludes Jesus’ explanation of the Son’s equality with the Father (John 5:19-29), and it introduces His clarification of the Father’s testimony about the Son (John 5:31-47). Some translations consider it the conclusion of the preceding pericope (e.g., NIV), and others take it as the beginning of the next one (e.g., NASB).

Jesus’ point was that He could not do anything independent of the Father because of His submission to Him. His judgment is the result of listening to His Father. His judgment is just because the desire for self-glory does not taint it. The Son’s will is totally to advance the Father’s will.