Revelation 6:9

6:9 Now ¹  when the Lamb opened the fifth seal, I saw under the altar the souls of those who had been violently killed ²  because of the word of God and because of the testimony they had given.

Revelation 9:13

9:13 Then ³  the sixth angel blew his trumpet, and I heard a single voice coming from the ⁴  horns on the golden altar that is before God,

Exodus 37:25-26

The Making of the Altar of Incense

37:25 He made the incense altar of acacia wood. Its length was a foot and a half and its width a foot and a half – a square – and its height was three feet. Its horns were of one piece with it. ⁵  37:26 He overlaid it with pure gold – its top, ⁶  its four walls, ⁷  and its horns – and he made a surrounding border of gold for it. ⁸ 

Exodus 40:26

40:26 And he put the gold altar in the tent of meeting in front of the curtain,

¹ tn Here καί (kai) has been translated as “now” to indicate the introduction of a new and somewhat different topic after the introduction of the four riders.

² tn Or “murdered.” See the note on the word “butcher” in 6:4.

³ tn Here καί (kai) has been translated as “then” to indicate the implied sequence of events within the vision.

⁴ tc ‡ Several key mss (Ì⁴⁷ א¹ A 0207 1611 2053 2344 pc lat sy^h co) lack the word τεσσάρων (tessarwn, “four”) before κεράτων (keratwn, “horns”). The word seems to have been added by scribes because a “horned” altar (described in the OT [Exod 30:2, 10]) could have only four “horns” or projections at the corners. NA²⁷ includes the word in brackets, indicating doubts as to its authenticity.

⁵ tn Heb “from it were its horns,” meaning that they were made from the same piece.

⁶ tn Heb “roof.”

⁷ tn Heb “its walls around.”

⁸ tn Heb “and he made for it border gold around.”