This kind of comment by church makes me grow apart from institution of church.He is just a human and how the hell he would know what God thinks (figuratively speaking).And if he is a true Christian ( and for God sake priest) he wouldn't call for revenge but for forgiveness.
It's for us ordinary people to fight our urge for revenge he shouldn't even have that urge.And it is for state to prosecute murder.
And about murdered priest...World is full of such a priests spreading hatred against those different then us...they are manipulative as well as politicians and I am sick of both sorts.  

Science without religion is lame, religion without science is blind...Albert Einstein