John 1:29 (KJV)
The next day, John sees Jesus coming to him, and says, “Behold the Lamb of God, who takes away the sin of the world.”

The Lamb is a metaphor for Jesus, the Messiah. A metaphor is a thing representing something else or symbolic of something else.

Sphragis-a signet; by implication the stamp impressed (as a mark of privacy, or genuineness) on a book or document or scroll :- a seal. Strong’s Talking Greek & Hebrew Dictionary.

In the first century, when Revelation was written, a person of authority would seal important documents to keep them secret or to authenticate them. Roman law required a last will and testament to be sealed 7 times, as the wills of Caesar Augustus and Emperor Vespasian were. This scroll with 7 seals, appears to be the last will and testament of Jesus, the Messiah.

Zoon-neuter of a derivative of <G2198> (zao); a live thing, i.e. an animal :- beast.
Strong’s Talking Greek & Hebrew Dictionary.

Revelation 4:6-8 (reconsidered)
⁶  And round about the throne, were four beasts (Greek word zoon; living creature) with bulging eyes in front and in back. The first beast (zoon; living creature) was like a lion, and the second beast (zoon; living creature) like an bullox, and the third beast (zoon; living creature) had a face like a human being, and the fourth beast (zoon; living creature) was like a flying eagle. Each of the four beasts (zoons; living creatures) had six wings all around it; and the bulging eyes are within the wings (or this could imply the zoon have “eyes to see within” the heart of man like the statement “have eyes to see” which is stated to the called out in all the letters to the churches) . The zoon do not rest day or night. They are continually saying, “Holy, holy, holy, Lord God Almighty, who was, and is, and is to come.”

Melas: Black or blackness

This word is not in the text. There isn’t a noun or pronoun, male or female, in the text to describe the rider. If the noun man/rider isn’t added, then the verse implies the horse is given the crown to wear and is holding the bow when it goes forth subdue and conquer.

Zygos: from the root of zeugnumi (to join, especially by a “yoke”); i.e. (figurative) servitude (a law or obligation) :- pair of balances, yoke. Strong’s Talking Greek & Hebrew Dictionary.

Denarion: of Latin origin; a denarius (or ten asses) :-a silver coin worth a day’s wages; pence, penny. Strong’s Talking Greek & Hebrew Dictionary.

Exodus 29:38-46 (KJV)
Now this is that which thou shalt offer upon the altar; two lambs of the first year day by day continually. The one lamb thou shalt offer in the morning; and the other lamb thou shalt offer at even:  And with the one lamb a tenth deal of flour mingled with the fourth part of an hin of beaten oil; and the fourth part of an hin of wine for a drink offering.
And the other lamb thou shalt offer at even, and shalt do thereto according to the meat offering of the morning, and according to the drink offering thereof, for a sweet savor, an offering made by fire unto the LORD.

This shall be a continual burnt offering throughout your generations at the door of the tabernacle of the congregation before the LORD: where I will meet you, to speak there unto thee. And there I will meet with the children of Israel, and the tabernacle shall be sanctified by my glory.

The wheat, barley, oil and wine are all used in the daily sacrifices at the temple or tabernacle in Jerusalem. Israelis anticipate the building of the 3rd temple in Jerusalem and the resuming of the daily sacrifices in the future.