The word, alleluia, is found four times in the NT, all in the letter called Revelation and all in the 19th chapter.
Rev 19:1 – And after these things (the judgment of the great whore; one-third of the earth will be destroyed) I heard a great voice of much people in heaven, saying, Alleluia; Salvation, and glory, and honor, and power unto Yahavah Elohiym.
Rev 19:3 – And again they said, Alleluia. And her smoke (the judgment of the great whore; one-third of the earth will be destroyed) rose up forever and ever. (to the ages of the ages)
Rev 19:4 – And the twenty-four elders and the four living ones (beasts) fell down and worshipped God that sat on the throne saying, Amen (Faithful), Alleluia.
Rev 19:6 – And I heard as it were the voice of a great multitude, and as the voice of many waters, and as the voice of many thunderings, saying, Alleluia: for Yahavah Elohiym omnipotent reigns.
“Alleluia” is an untranslated word in the KJV. It has been Greek-cized and then Anglicized from two Hebrew words, HaLaL (Strongs 1983) and YaH (Strongs 3049). Thus, in the Hebrew the word would be HaLaLYah. In the Greek the word (Strong 239) would be spelled αλληλουוα. It is found 20 times in the LXX. It is only found in the title of the Psalms in the LXX. The word is not found in the KJV OT. As a sidebar for most (not all of the Psalms there is a one number difference between the number of the Psalms in the KJV versus the LXX. For example, Psalms 104 in the LXX is Psalm 105 in the KJV. Because the word alleluia is only found in the title of Psalms in the LXX, I will list the Psalm it occurs by the number in the LXX (and not in the KJV). Alleluia is found in Ps 104:1; 105:1; 106:1; 110:1; 111:1; 112:1; 113:1; 114:1; 115:1; 116:1; 117:1; 118:1; 134:1; 135:1; 145:1; 146:1; 147:1; 148:1; 149:1; 150:1.
As stated before alleluia is derived from two Hebrew words, HaLal and YaH, joined as HalaYaH. HaLaL (Strongs 1983) is found 165 times in the OT: praise (117); glory (14); boast (10); mad (8); shine (3); foolish (3); commended (2); rage (2); celebrate (1); give (1); marriage (1); renown (1). The essence of the meaning of the word is “to shine”. Thus, God is praised or HaLaL when light is shined upon who He is, His character.
If a person shines the light on him or herself this would be considered boasting. Let God be our judge. In this context the translation of HaLaL would be to boast, mad, foolish or rage, all with a negative sense. The puddle of words HaLaL is found in Strongs are numbers 1972-1989. HaLam (1986, to strike down), HaLMuWTH (1989, hammer) could be related to effect of a bright light shining on a person and striking them down, such as Paul’s conversion and struck down by light (Acts 9:3-4). Other words such as HaLeK (1982, journey, traveler), HaLaK (1983, walk), HaLiYKaH (1979, walking) and HaLA (1972) all relate to a journey. The connection to journey could be bringing one closer to a distant place, shining the light on it.
In conclusion when God is HaLaL or praised, the light of truth is shined upon his character. He is worthy of all praise – all HaLaL. Light can smite, but light can also glorify and magnify. Light illuminates our journey here on the earth, in the days of the flesh. If we walk in the light as He is in the light, we have fellowship with one another and the blood of Yeshua His Son cleanses us from all unrighteousness
I mark this writing by the one true gospel, and the one true gospel is the Mashiach, Yeshua of Nazareth, died for our sins according to the Old Testament, He was buried and He rose again the third day according to the Old Testament. (Luke 24, 1 Cor 15:1-6) The testimony of two or more confirm the fact, and the fact is the one true gospel.