Prayer Move Jehovah to Take Action

Jehovah told Hezekiah that he will not get well from his sickness (2Ki 20:1; ip-1 394 ¶23)

Faithful Hezekiah beg Jehovah (2Ki 20:2, 3; w17.03 21 ¶16)

Hezekiah prayers move Jehovah to help him (2Ki 20:4-6; g01 7/22 13 ¶4)

Our prayers can move Jehovah to do what he was not having in mind. How this Bible account can encourage us to continue praying?