Hi Laura3, this is what your post reminded me of:
Jeremiah 43:10
And say unto them, Thus saith the LORD of hosts, the God of Israel; Behold, I will send and take Nebuchadrezzar the king of Babylon, my servant, and will set his throne upon these stones that I have hid; and he shall spread his royal pavilion over them.
See how YHVH calls Nebuchadrezzar the king of Babylon, my servant? He is the King of kings.
Look at this:
Obadiah 1:12 But thou shouldest not have looked on the day of thy brother in the day that he became a stranger; neither shouldest thou have rejoiced over the children of Judah in the day of their destruction; neither shouldest thou have spoken proudly in the day of distress.
So the Almighty will use whomever He chooses to accomplish His will. This reminds me of what Paul said, We would do well to remember to take heed, lest we fall.
Isaiah 28:27 For dill is not threshed with a threshing sledge, Nor is the cartwheel driven over cummin; But dill is beaten out with a rod, and cummin with a club. 28Grain for bread is crushed, Indeed, he does not continue to thresh it forever. Because the wheel of his cart and his horses eventually damage it, He does not thresh it longer. 29This also comes from the LORD of hosts, Who has made His counsel wonderful and His wisdom great.…
...this is saying Almighty will use the appropriate means to get us ready. Some are willing, some more stubborn, not wanting to yeild to Him. Seems unfair at times, but the Creator of all is in control, and He is just and merciful.