Shared ground
Zechariah 8:14–15 presents God as acting with a settled intention, not random impulse. The same verb for “determined/thought” is used for both judgment and restoration, linking the past and the present. The text openly connects earlier disaster with the prior generation’s actions (“your fathers provoked me”), and it equally openly announces a new purpose “in these days” to do good to Jerusalem and Judah. The stated result is reassurance: “Don’t you fear.”
The passage also assumes continuity in God’s identity and authority (“Yahweh of hosts”), even though his stated purpose toward the community changes from harm to good.
Where interpretation differs
Some readers take “evil” here to include moral evil in God, while others read it as “calamity/disaster” (harm in the sense of judgment). The second reading fits the historical setting (exile and ruin) and the explicit cause (“provoked me”), but the English word “evil” can sound broader than the intended sense.
Another difference is how to understand “I didn’t repent.” Some take it to mean God had no regret at all; others take it more narrowly: God did not reverse the announced judgment once the provoking had happened.
A smaller question is how broad “in these days” is—whether it refers mainly to the immediate post-return period or to a longer restoration era.
Why the disagreement exists
The disagreement mainly comes from how older wording (“evil,” “repent”) can be heard in modern English versus how those words function in prophetic contexts about national disaster and divine relenting. The passage itself supplies clues (the “fathers,” the provocation, the paired “do harm/do good”), but it does not spell out every philosophical detail about how divine intention relates to time.
What this passage clearly contributes
Explicitly, the text says God previously set his intention to bring harm because of provocation and did not turn back from that intent, and that he has now set his intention to do good to Jerusalem and Judah “in these days.” It also explicitly grounds the community’s lack of fear in that announced intention.
By implication (without stating it as a theory), the passage frames restoration not as denial of the past judgment but as a new declared direction from the same God—judgment and renewal both presented as purposeful, not accidental. See also Jeremiah 29:11 for a similar “plans/purpose” way of speaking about divine intent.