Did Jesus collect tax with the tax collectors? Did Jesus perform sexual favors with the harlots? Did Jesus join the Roman army?
1. Collecting tax is not a sin...in fact he didn't tell Zacheus not to collect taxes. Zach DID say he would stop cheating people.
2. Sexual favors with harlots is a sin, so of course Jesus didn't do that.
3. Joining an army is never called a sin in scripture...so I'm not sure your point here.