en_tn/rev/17/17.md

For God has put it into their hearts to carry out his purpose by agreeing to give ... until God's words are fulfilled

They would agree to give their power to the beast, but it would not be that they want to obey God. Alternate translation: "For God has put it into their hearts to agree to give ... until God's words are fulfilled, and by doing this, they would carry out God's purpose"

God has put it into their hearts

Here "heart" is a metonym for desires. Making them want to do something is spoken of as putting it in their hearts to do it. Alternate translation: "God has made them want" (See: rc://en/ta/man/jit/figs-metonymy and rc://en/ta/man/jit/figs-metaphor)

power to rule

"authority" or "kingly authority"

until God's words are fulfilled

This can be stated in active form. Alternate translation: "until God fulfills what he said will happen" (See: rc://en/ta/man/jit/figs-activepassive)