Should Christians Be Expected to Work for Free?

Questions about why Paul circumcised Timothy in Acts 16:1–3 after the judgment against requiring circumcision was given by the Council of Jerusalem and whether it’s wrong for Christians to expect other Christians to work for free since it’s “for the Lord.”

• Why did Paul circumcise Timothy in Acts 16:1–3 after the judgment against requiring circumcision was given by the Council of Jerusalem?
• Is it wrong for fellow Christians to expect me to work for free since it’s “for the Lord”?