'Man's' in the Bible

“Didn’t we strictly order you not to teach in this name? And look, you have filled Jerusalem with your teaching and are determined to bring this man’s blood on us!”

Then the Spirit told me to accompany them with no doubts at all. These six brothers accompanied me, and we went into the man’s house.

“From this man’s descendants, according to the promise, God brought the Savior, Jesus, to Israel.