First, welcome.
Second, not everyone here us a Christian, although many are.
Thirdly, it is not a sin to be angry or to have a heated discussion. We are commanded not to son in our anger. Christ himself had a temper, as Scripture shows more than once.
Christ didn’t have a temper, he showed righteous indignation. Righteous indignation does not require temper, just overwhelming feeling in what you believe in.
“Thirdly, it is not a sin to be angry or to have a heated discussion. We are commanded not to son in our anger. Christ himself had a temper, as Scripture shows more than once.”
I think Paul had and expressed strong opinions strongly, also.