I think Jesus would be in opposition to any that are in their place with God, on the Throne seat of Christ (Rev. 3:21) and are unwilling to bring others to the same place. As you have been freely given, freely give. The same commandment the 12 and the 70 were given before they went out to spread the Kingdom of God is at hand message.
So if they are not in full accord, Jesus would have to Rebuke and Chasten even them. How many teachers in any practice of Christianity are not doing as much?
We all fall short of the Glory of God. So who would Jesus not be in opposition to?
Paul had a thorn in his side that he asked relief from, God withstood his request and replied the His Grace was sufficient. A person that had physical issues were not allowed into the Temple (maybe the reason his head had to be shaved before his purification ceremony) just as only a blemishless animal was allowed for proper sacrifice.
None of us measure up, yet we are all tasked with speading the Gospel and bringing in others to the place we are supposed to occupy.
Justice means we get what we deserve for our messups.
Mercy means we don't get what we deserve for uor messups.
Grace means we get what we don't deserve as reward through Jesus's finished work on the Cross and His Resurection.
Short answer, Jesus would in Righteousness oppose us all, and yet He Loves each one of us enough to Die in our place of true justice to bring about God's Grace.