There's not a mixture in it. God doesn't like mixtures. Sadly, we can be motivated by many reasons other than sacrificial love. Jesus said: it's what's in your heart, that defiles. What comes out of your heart, is what defiles a man. We can have heart motivations that defile. That we can do the right things, but for the wrong reasons, with wrong motivations.
God is weighing up not just what you did, but the ‘why’ you did it - what was driving it. Jesus was moved by love; He was moved by compassion; He was moved by the spirit; He was moved by obedience to God. Whatever Jesus did, flowed out of a heart of love. However, the heart motivations that defile people - there can be many. Let me give you a few...
Some people are motivated by guilt. They've failed somewhere in their life; and a lot of their activities - they look like they're good, they look sacrificial, but they're actually driven by guilt. There's a pressure in their life of guilt, that's motivating the actions.
To some people it could be a false burden of responsibility. Maybe they had a parent fail, who was an alcoholic, or a drug addict, or abandoned the family. The child has stepped up, and felt that, out of fear of what might happen, I need to take on the responsibility; or maybe the parent's put it on them - you've got to be the responsible one. So all their life, they've carried this burden of responsibility, and this in the end makes them ‘rescuer’ in their relationships. They take over things, but not because of love, which would make people responsible for their lives, but out of a sense of responsibility (or fear) of what may happen; so, they end up rescuing people.
For some people, what moves them is the fear of being rejected. They fear that if they don't do it, they will be rejected - they won't be approved of; won't be accepted. This can be a big thing in some families, in some cultures.
For some people, they do it out of duty. When you do things out of duty, you do it because it's the right thing to do; but no one feels the love in it - the job was done, but there's no sense of love. There's no fragrance of Christ in it at all, there's no sense of the presence of God. It was just: I did my duty; I did what I needed to do. No one acting that way produces life; it's just, you did what was right.
Some people do things out of resentment. They're doing it; and they're reluctant to speak up, and out, that they don't want to do it - so they do it with resentment. They do it with a grudge. When people do works that are resentful, the work may look good, but it's got a wrong motivation - there's a polluted river flowing through it!
For some people, they do it because it's a religious work; and sadly, churches are full of religious works, that are completely dead. Religious works are works that are done out of the law; they're done out of obligation, or duty; they're done to please people; they're done out of because I'm afraid of what'll happen – that I might be shamed, or put to shame, if I don't do it. Religious duty, or religious spirit, can put a burden on people, to function and do things; but what they do has got no life in it, and there's no eternal value in it, because it's not motivated by the love of God.
For some people, they're driven by what's called ‘performance orientation’. They've never been affirmed, never been loved; their heart has been broken. Perhaps they were never good enough; and they believe in their heart: nothing I do is good enough. Their approval came when they did something, so their whole life was all about doing, doing, doing, because of a core need in their life, for validation or acceptance, that was never given to them. They're operating out of a broken heart!
Some people can do it out of rejection.
Some people do it out of pride - they want to look good in front of everyone. What they're doing is carefully selected to impress the person who can promote them.
Every one of us have seen those kinds of activities, and the Bible calls them ‘Dead Works’. In Hebrews 6:1-3, the foundation of our faith in Christ, starts with building ‘repentance from dead works’, and then ‘faith towards faith the living God’. We need to repent from dead works. Dead works are works - they're things that people do; but they're not done out of love, or out of the inspiration of the Holy Spirit; they're not done out of a pure heart. They're done out of all these wrong heart motivations. When you look at that list of heart motivations, they tell you that the person's heart is broken. They're damaged in their heart, and they need heart transformation.