Messianic Ps. 45 unmistakably confirms 1st Seal rider is Christ
The 1st Seal white horse rider is Christ positioned to strike his foes with his arrows (Seals 2, 3, 4 - ‘judgments’), preparatory to his parousia (Rev. 19) and ultimate conquest. (Not the Antichrist persecuting the church.)
“That the rider here is no other than Christ is clear from the unmistakeable reference of this passage to the Messianic Psalms 45, which is distinctly referred to Christ in Hebrews 1:8. The royal dignity, the sitting upon a horse, the bearing of a bow, the going forth to fight, the fulness of victory, all, excepting only the white colour of the horse, presents itself there again.”
“The agreement with ch. Revelation 19:11 is of the greater moment as the end of Christ's war and victory there corresponds with the beginning here.” —Ernst Hengstenberg, "Commentary on Revelation 6:2"
“That the rider here is no other than Christ is clear from the unmistakeable reference of this passage to the Messianic Psalms 45, which is distinctly referred to Christ in Hebrews 1:8. The royal dignity, the sitting upon a horse, the bearing of a bow, the going forth to fight, the fulness of victory, all, excepting only the white colour of the horse, presents itself there again.”
“The agreement with ch. Revelation 19:11 is of the greater moment as the end of Christ's war and victory there corresponds with the beginning here.” —Ernst Hengstenberg, "Commentary on Revelation 6:2"