This a a grand question!! Being your earthly father,of course even though you do not like what he does,you do love him as you dad!
If you were to ask me to drive you to a bank,and you robbed it,then came back,and asked me to drive you home,and I did,and as we drove to your house we were stopped by the police,I would be arrested to.Guilt by association. Matters not if I knew what you were going to do or not!
In my humble opinion,if we know what he is going to do with the money,and we help him sin,then we are as guilty as the person who commits the act.
I would just repent of my past sins,as we should do daily anyway,and tell your dad,if you are hungry, I will feed you,if you have any need,I will meet that need as best I can,but what I will not do,is help kill you! Or hurt you! For by doing so I am as guilty as you are,not that I am any better then you are Dad!!
I just have a consicence, because Jesus gave me one now! Hope this helps!! I would also not say this in a judgement tone either!! I would say this as a son who loves and cares for his earthy father!! amen.