There is more to it than just applying the Golden rule of “Do unto other as you would do unto yourself.”
It is actually thinking of where you wish to get to in your relationship with God as well and helping others to achieve that same goal.
When you seek to have an eternal life with God you must ask Jesus Christ to be your Savior. You should then in loving your neighbor as yourself seek to have them also accept God as their Savior.
But to be saved you must repent of your sins:
Acts 3:19 – Now repent of your sins and turn to God, so that your sins may be wiped away
Repent – metanoeo – I repent, change my mind, change the inner man (particularly with reference to acceptance of the will of God), and repent.
Repent in the Theological Dictionary of the New Testament (NTD) is defined as:
“It can then mean ‘to change one’s mind,’……. ‘to adopt another view,’ ‘to change one’s feelings.’”
When taught by Jesus Christ in the Aramaic it goes down to meaning “to convert” and “conversion”
Again from the NTD: “What John advances is the ancient prophetic summons of conversion, for a break with the ungodly and sinful past, for turning to God, because God, active in history, turns to man. But the summons is more categorical than it was on the lips of the prophets, for it stands under the urgency of the eschatological revelation of God. The term which John makes his slogan is familiar to his Jewish contemporaries. It is the epitome of their unwearied and manifold exertions to throw off sin and to fulfill the commandments. But the slogan gives the word a wholly new significance. Conversion is once and for all. It must be genuine and not in appearance only.”
There are many things in what I have just shown from the NTD. When you repent you are to leave your sin behind and never return to it. When loving your neighbor you should seek that exact same thing for them.
Now there are those that have fallen into this believe that “love” is all that is required for humanity to reach God. This came out of the hippie movement in the 1960s. It came from a culture that experiment in drugs and “sexual freedom.” Simply it was born from those sinning and wishing to spread sin.
So how can something that came from sin get you or your neighbor to God? It can’t. Especially when we are told we must repent or convert and leave sin behind.
The Bible shows us what is sin and even tells us outright that some sin especially if people maintain themselves in those sin will not be welcome into the eternal service of God.
1 Corinthians 6:9 – Don’t you realize that those who do wrong will not inherit the Kingdom of God? Don’t fool yourselves. Those who indulge in sexual sin, or who worship idols, or commit adultery, or are male prostitutes, or practice homosexuality, 10 or are thieves, or greedy people, or drunkards, or are abusive, or cheat people—none of these will inherit the Kingdom of God. 11 Some of you were once like that. But you were cleansed; you were made holy; you were made right with God by calling on the name of the Lord Jesus Christ and by the Spirit of our God.
So if you do not wish to live in sin and wish to make it into the eternal service of God how can you allow your neighbor to go into damnation?
If you truly love them you must tell them they sin and get them to repent of their sin never to partake of it again. That to me is truly loving your neighbor. For I would rather have someone I helped join me on my millionth birthday then to allow them out of “love” to instead be cast into the pit of fire and to live in eternal pain and agony.