This is a continuation of Ellen White's
commentary of the book of Revelation

Revelation 5:5-6 (KJV) 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.
And I beheld, and, lo, in the midst of the throne and of the four beasts, and in the midst of the elders, stood a Lamb as it had been slain, having seven horns and seven eyes, which are the seven Spirits of God sent forth into all the earth.

This quote isn't Ellen White
Acts if the Apostle
Page 589
A lion and a lamb

The Savior is presented before John under the symbols of " the Lion of the tribe of Judah" and of "a Lamb as it had been slain" (Revelation 5:5,6)these symbols represent the union of omnipotent power and self u sacrificing love. The Lion of Judah, so terrible to the rejectors of His grace, will be the Lamb of God to the obedient and faithful.... The arm strong to smite the rebellious will be strong to the deliver the loyal. Everyone who is faithful will be saved.