My bible footnote connects the above passage with Rev. 17:14, the Lamb overcoming the kings who receive power for one hour with the beast, and with Rev 3:21, Christ Jesus saying that He also overcame in the message to the church.
KJV - 5 And one of the elders saith unto me, Weep not: behold, the Lion of the tribe of Juda, the Root of David, hath prevailed to open the book, and to loose the seven seals thereof.
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.