For the following I would say that Jehovah does not make mistakes. It is the change in people's attitude toward his righteous standards that changes how he feels.
A Repentant God?
M’Clintock and Strong’s
Cyclopædia comments: “God himself is said to repent [
na·cham′, feel regret]; but this can only be understood of his altering his conduct towards his creatures, either in the bestowing of good or infliction of evil—which change in the divine conduct is founded on a change in his creatures; and thus, speaking after the manner of men, God is said to repent.” (1894, Vol. VIII, p. 1042) God’s righteous
standards remain constant, stable, unchanging, free from fluctuation. (
Mal 3:6; Jas 1:17) No circumstance can cause him to change his mind about these, to turn from them, or to abandon them. However, the attitude and reactions of his intelligent creatures toward those perfect standards and toward God’s application of them can be good or bad. If good, this is pleasing to God; if bad, it causes regret. Moreover, the creature’s attitude can change from good to bad or bad to good, and since God does not change his standards to accommodate them, his pleasure (and accompanying blessings) can accordingly change to regret (and accompanying discipline or punishment) or vice versa. His judgments and decisions, then, are totally free from caprice, fickleness, unreliability, or error; hence he is free from all erratic or eccentric conduct.—
Eze 18:21-30; 33:7-20.
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In the same way God can “feel regret” and ‘turn back’ from carrying out some punishment when his warning of such action produces a change in attitude and conduct on the part of the offenders. (
De 13:17; Ps 90:13) They have returned to him and he ‘returns’ to them. (
Zec 8:3; Mal 3:7) Instead of being ‘pained,’ he now rejoices, for he finds no delight in bringing death to sinners. (
Lu 15:10; Eze 18:32) While never shifting away from his righteous standards, God extends help so that persons can return to him; they are encouraged to do so. He kindly invites them to return, ‘spreading out his hands’ and saying by means of his representatives, “Turn back, please, . . . that I may not cause calamity to you,” “Do not do, please, this detestable sort of thing that I have hated.” (
Isa 65:1, 2; Jer 25:5, 6; 44:4, 5) He gives ample time for change (
Ne 9:30; compare
Re 2:20-23) and shows great patience and forbearance, since “he does not desire any to be destroyed but desires all to attain to repentance.” (
2Pe 3:8, 9; Ro 2:4, 5) On occasion he kindly saw to it that his message was accompanied by powerful works, or miracles, that established the divine commission of his messengers and helped strengthen faith in those hearing. (
Ac 9:32-35) When his message receives no response, he employs discipline; he withdraws his favor and protection, thereby allowing the unrepentant ones to undergo privations, famine, suffering of oppression from their enemies. This may bring them to their senses, may restore their proper fear of God, or may cause them to realize that their course was stupid and that their set of values was wrong.—
2Ch 33:10-13; Ne 9:28, 29; Am 4:6-11.
However, his patience has its limits, and when these are reached he gets “tired of feeling regret”; then his decision to render punishment is unchangeable. (
Jer 15:6, 7; 23:19, 20; Le 26:14-33) He is no longer merely “thinking” or “forming” against such ones a calamity (
Jer 18:11; 26:3-6) but has reached an irreversible decision.—
2Ki 23:24-27; Isa 43:13; Jer 4:28; Zep 3:8; Re 11:17, 18.
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Repentance — Watchtower ONLINE LIBRARY