The Lord Yahweh showed me this: there, he was forming a locust swarm at the beginning of the growth of the spring crop. There—the spring crop after the king’s reaping. When it had finished consuming the grass in the country, I said, ‘Lord Yahweh, please pardon, how can Ya’aqob stand, because it’s small.’ Yahweh relented about this. ‘It won’t happen’, Yahweh said.
The Lord Yahweh showed me this: there, he was calling for an argument by fire. It consumed the Great Deep and it was consuming the plots. I said, ‘Lord Yahweh, please spare, how can Ya’aqob stand, because it’s small.’ Yahweh relented about this. ‘It won’t happen either’, the Lord Yahweh said.
(Amos 7:1–6, The Bible for Everyone: A New Translation)
Amos’ intercession for people who did not deserve mercy and Yahweh’s response to that plea reveals a key factor about Yahweh’s character. Not only is Yahweh a God of mercy, but he is also a God who listens to those who pray to him—and he responds.
(JoAnna M. Hoyt, Amos, Jonah, & Micah, ed. H. Wayne House and William D. Barrick, Evangelical Exegetical Commentary (Bellingham, WA: Lexham Press, 2018), 260.)
Simply stated, God is merciful and God can change his mind based on what he hears from us. Even in the Old Testament.