Shared ground
Ecclesiastes 5:4–7 treats vows as voluntary but weighty. The explicit claims are straightforward: if a vow is made to God, delaying payment is called foolish; it would have been better not to vow than to vow and not pay (vv. 4–5). The passage links careless speech to real moral danger: “your mouth” can lead you into “sin,” and attempted backtracking does not remove responsibility (v. 6). It also ties “many words” and “many dreams” to emptiness, setting reverence for God as the alternative posture (v. 7). See also Deuteronomy 23:21–23.
The passage presents God as personally involved in worship speech: God is not impressed by empty pledges, can be angered by manipulative or evasive “voice,” and can bring loss that affects “the work of your hands” (v. 6). That loss is framed as a serious consequence of treating speech before God as cheap.
Where interpretation differs
Who is “the messenger” (v. 6)? Some read “messenger” as a temple-related official (for example, someone involved in receiving/recording vows), so the scenario is a person trying to talk their way out of a public obligation. Others read it as a heavenly messenger, making the point even more directly about being accountable to God’s representatives.
What kind of harm is “destroy the work of your hands” (v. 6)? Some take it mainly as economic/social loss tied to broken obligations. Others take it more broadly as God undermining a person’s efforts and outcomes in life.
How do “dreams” relate to vows (v. 7)? Some read “dreams” as overconfident plans, religious excitement, or fantasies that lead to big promises. Others take it as a general proverb: dreams and many words both produce emptiness when they substitute for reverent reality.
Why the disagreement exists
The Hebrew wording for “messenger” can point in more than one direction, and the immediate context does not name the role. Likewise, “destroy the work of your hands” is vivid but not specific about mechanism, leaving room for a narrower (financial) or broader (life outcomes) sense. “Dreams” is also brief and metaphor-like, so readers differ on whether it is tightly connected to vows or offered as a widening summary.
What this passage clearly contributes
This unit grounds worship speech in accountability: speaking to God is not casual. Once obligations are voiced, delay and evasion are treated as folly, not as a harmless change of mind. The passage also contributes a practical moral insight: words create obligations that can become a trap into wrongdoing (v. 6), especially when a person tries to label a vow “a mistake” after the fact. Finally, it connects wordiness—especially when fueled by dreamy overconfidence—to “vanity” (emptiness), presenting reverence for God as the stabilizing contrast (v. 7). Matthew 5:33–37 is often compared for its caution about oaths.