Contradiction with Amos 5:21
This verse discusses the LORD's rejection of religious feasts and assemblies, contrasting with the joyful restoration and celebration in the context surrounding Zechariah 8:18.
Amos 5:21: I hate, I despise your feast days, and I will not smell in your solemn assemblies. [in...: or, your holy days]
Contradiction with Malachi 1:10
Presents dissatisfaction with offerings due to insincerity, which contrasts with the themes of sincerity and divine favor in Zechariah 8.
Malachi 1:10: Who [is there] even among you that would shut the doors [for nought]? neither do ye kindle [fire] on mine altar for nought. I have no pleasure in you, saith the LORD of hosts, neither will I accept an offering at your hand.
Contradiction with Isaiah 1:13-14
God's disdain for empty festivals opposes the celebration theme likely intended in the prophecy around Zechariah 8:18.
Isaiah 1:13-14: Bring no more vain oblations; incense is an abomination unto me; the new moons and sabbaths, the calling of assemblies, I cannot away with; [it is] iniquity, even the solemn meeting. [iniquity: or, grief]
Contradiction with Jeremiah 6:20
The rejection of sacrifices that don't come from the heart contrasts with the renewed hope and prosperity in Zechariah 8.
Jeremiah 6:20: To what purpose cometh there to me incense from Sheba, and the sweet cane from a far country? your burnt offerings [are] not acceptable, nor your sacrifices sweet unto me.
Contradiction with Ecclesiastes 1:14
The view of vanity contrasts with the optimistic message surrounding Zechariah 8:18, which conveys hope and restoration.
Ecclesiastes 1:14: I have seen all the works that are done under the sun; and, behold, all [is] vanity and vexation of spirit.