NO IT IS AN ACT OF GOD's LOVE HE has put in us.
I'll bite!
Your saying we respond with saving Faith because of the indwelling Spirit of Christ. Well that is true after God has been perfecting us for years and years.
What about before we receive the Spirit of Christ? When we are just being called out by the Father? Pisteuo is a simple response to the call!
Because your understanding of pisteuo or saving Faith is incorrect (believe and recieve), you think that you received the Spirit of Christ at the beginning of the salvation journey, when you can't receive it until a number of things must happen, and happen in the correct order. Your understanding is backwards.
1) we are called by the Father.
2) we respond to the call with a turning from our way to His way. Repentance.
3) we then take our first step in Faith towards God. Submitting our surrendered life for the first time.
4) Christ must determine if the surrendered life is genuine.
5) if genuine, we move into the testing ground, or what the word calls the parable of the sower.
6) in the testing ground or parable of the sower, 3 out of the four surrendered lives will fail. (Without the Spirit of Christ yet.) If they failed with the Spirit of Christ, they wouldn't be able to start the journey anew, submitting a surrendered life again to be tested. Since the three that failed didn't have the Spirit of Christ yet, they can start again as long as the Father continues to draw them.
7) the one good soil goes onto the grafting process , continuing forward with saving pisteuo, or continually surrendered life.
8) God then accepts the tested and grafted on surrendered life by sealing the Spirit of Christ in that vessel..
Now, and only now does the Spirit of Christ, Christ, His word, and the promises in His word belong to that surrendered vessel. And yes, at this point our Continually surrendered life is mixed with the love of God we sense through His Spirit being in us. And if we have the Spirit of Christ, we also have the mind of Christ! Our Faith, our continually surrendered life is being perfected by Jesus. At this state, it's harder for one like that to get out of God's will, than it would be to stay in it!
That a quick outline of the salvation process. Everything in there must happen and happen in the correct order.
Believing then recieving? It's not an option!