How do we know that Christ opened the understanding of His disciples?

In Luke 24:45, we read, 'Then opened he their understanding, that they might understand the scriptures.' This moment occurred after Christ's resurrection, illustrating that understanding of the Scriptures comes from Christ Himself. The disciples, though having walked with Him and heard His teachings, needed divine intervention to grasp the deeper truths revealed in the Old Testament. This act of opening their understanding signifies that true comprehension of the gospel and its implications relies not merely on human effort but on Christ's revelation, allowing believers to see how the Scriptures point to Him and His work of salvation.