Introduction

The Book of Haggai, also known as the Book of Aggeus, is a book of the Hebrew Bible or Tanakh, and has its place as the third-to-last of the Minor Prophets. It is a short book, consisting of only two chapters. 

Author

The Book of Haggai is named after its presumed author, the prophet Haggai. There is no biographical information given about the prophet in the book. 

Date

The historical setting dates around 520 BC before the Temple has been rebuilt.

Outline

Divine Announcement: 

• The Command to Rebuild the Temple (1.1–15 )

• Introduction: Reluctant Rebuilders (1.1–2 )

• Consider your ways: fruitless prosperity (1.3–12 )

• Promise and Progress (1.13–15 )

• Divine Announcement: The Coming Glory of the Temple (2.1–2.9 )

• God will fulfill his promise (2:1–5 )

• Future Splendor of the temple (2:6–9 )

Divine Announcement: 

• Blessings for a Defiled People (2.10–19 )

• Former Misery (2.10–17 )

• Future Blessing (2.18–19 )

Divine Announcement: 

• Zerubbabel Chosen as a Signet (2.20–23 )

The rest of this comprehensive Wikipedia article on the book can be read here.

An extract from BHFA Volume 5

Haggai 1:1b

 הָיָה       דְבַר־      יְהוָה          בְּיַד־        חַגַּי       הַנָּבִיא

the prophet    Haggai    by the hand of    Yahweh    the word of    it was

• KJB came the word of the LORD by Haggai the prophet

• NASB the word of the LORD came by the prophet Haggai

• ESV the word of the LORD came by the hand of Haggai the prophet

• NLT the LORD gave a message through the prophet Haggai

• NIV the word of the LORD came through the prophet Haggai

 In BHS there is a footnote mentioning the Greek Septuagint. The Greek LXX indeed has λέγων είπον meaning,  ...Haggai the prophet saying: "Say to Zerubbabel...

This is in accordance to the end of Hg 2:1 and the beginning of Hg 2:2 in the MT.

An extract from BHFA Volume 5

Haggai 1:14d

   בְּבֵית־            יְהוָה       צְבָאוֹת        אֱלֹהֵיהֶם׃

 their God        armies      YHWH      in the house of

• KJB in the house of the LORD of hosts, their God,

• ESV on the house of the LORD of hosts, their God,

• NASB on the house of the LORD of armies, their God,

• NLT on the house of their God, the LORD of Heaven’s Armies,

• NIV on the house of the LORD Almighty, their God,

• GNT on the Temple of the LORD Almighty, their God,

• ISV on the house of their God, the LORD of the Heavenly Armies.

 צְבָאוֹת

Noun, f. pl. form of צָבָא meaning, "army, war, warfare." It occurs 283 times in the Hebrew Bible, and in almost all of these cases, in combination with Yahweh. It is first used in 1 Sm 1:3, and most frequently used in Isaiah (62 times) and Jeremiah (82 times).

The most common translation into English is, "LORD of Hosts" (KJB, ESV, ERV), but other alternatives are,

• "LORD Almighty" (NIV, GNT),

• "LORD of Heaven's Armies" (NLT, ISV),

• "LORD All-Powerful" (CEV),

• "Yahweh of Armies" (WEB),

• "Jehovah of hosts" (ASV),

• "LORD of armies" (NASB).

Haggai uses this appelation 14 times (1:2,5,7,9,14; 2:4,6,7,8,9,9,11,23,23).