Not to let somebody down, keep one's promise.(verb)
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Use "come through" in a sentence
"On the other hand, I realized that because I now had editorial control of any B-roll footage related to the research, I had the potential to protect any information that might come through related to Princess Diana."
"Say what you will about the River Heights PD—they always come through in the end."
"I hope one day you can come through the doors of Slimmons and let me motivate you."