Here are a few ways you could use "proclaim" in a sentence that makes sense:
1. "If he gets tired along the way, he gives me the power to proclaim his message."
This sentence implies that someone has been given the authority to speak on another person's behalf, possibly in a situation where the first person is unable to continue.
2. "He proclaimed, 'If I get tired along the way, I will give you the power to continue my mission!'"
This sentence uses "proclaim" to indicate a strong, public declaration.
3. "If he gets tired along the way, he may proclaim his inability to continue."
This sentence uses "proclaim" to indicate a formal announcement.
To get the best answer, please provide more context about the situation you're describing. What is the specific meaning you are trying to convey?