But no one in heaven or on earth or under the earth could open the scroll or even look inside it. 4 I wept and wept because no one was found who was worthy to open the scroll or look inside. 5 Then one of the elders said to me, “Do not weep! See, the Lion of the tribe of Judah, the Root of David, has triumphed. He is able to open the scroll and its seven seals.” (Revelation 5:3-5 NIV)
At first John was disappointed. He had been summoned into heaven in order to see what was on the scroll of seven seal, but now no one could be found to open it. He was so upset by this drawback that he began to weep.
But the elders who were nearby him did not weep, for they knew that Jesus would be making His entrance shortly, and that He had the power to open the scroll. The elder next to John refers to Jesus as the “Lion of the tribe of Judah,” the root of David. He was called a Lion because He is a powerful king, the only king with a just claim to the throne of the whole Earth. He is the “root of David” of the “tribe of Judah” because He is David’s earthly descendant. God’s promises to David of an eternal line and kingdom are fulfilled in Jesus Christ.
John needs not worry for Christ has “triumphed.” Jesus always triumphs in everything that He sets out to do. He triumphed over death, He will triumphed to open the seven seals, and He will triumph over the armies of the Antichrist and Satan at the battles of Armeggedon and Magog (See Revelation 19:21, 20:9)