When it comes to ‘mammon’, Jesus never actually mentions a ‘spirit’ of mammon. The word is only ever in one passage, the context being the parable of the dishonest manager (luke 16), and it is quoted from here in Mat 6. The idea that ‘mammon’ was a false god or demon, came about much later than Jesus’ time, and is often thought to be people linking it with a god of Greek mythology called ‘Plutus’. So the idea that there is a ‘spirit of mammon’ or a god with which we do battle is something that people have added to the scripture that does not necessarily come from it.
[So the good news is that there is no ‘fight’ at all between us and this ‘false god’ or ‘spirit of mammon.’ The fact is that the fight has been won by Jesus; he died to defeat our sin and enable us to live a life pleasing to him through his holy spirit in us. Our ‘false worship’ is the real enemy that has to be defeated, and the Bible says that ‘Christ suffered once for sins, the righteous for the unrighteous, to bring you to God’ (1 Peter 3:18). All that needs to be done to bring us to God has been done in the death of Jesus and is applied to your life when you repent and believe in him. So our encouragement is not to take up arms against a defeated enemy who is really a product of our own creation as sinful humans, but to ‘look to Jesus, the founder and perfector of our faith’ (Heb 12:3), and it is by keeping focussed on Jesus that we grow, that those around us see Jesus, and that the gospel is spread. ‘Abide in me and I in you. As the branch cannot bear fruit by itself, unless it abides in the vine, neither can you, unless you abide in me.’ (John 15:4) ]
[“By this we may know that we are in him: whoever says he abides in him ought to walk in the same way in which he walked” also written by John (1 John 2:5-6)
So, all this is to bring us back to KNOWING Jesus, focusing our hearts back into “abiding” in him.]