Ephesians 1:22 NLT
God has put all things under the authority of Christ and has made him head over all things for the benefit of the church.
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God is the main and only factor behind our victorious life,
It is God that has given us victory.
From the very beginning to the end, it is his works.
Everyone in Christ is victorious and even those that haven't recognised it, and remember it is the sole work of God that brought us from dead into eternal life which is, it was him, he did it all, the work of our salvation. He was the one that love the world, he was the one that gave, he was the one that was In christ, it was him that did it all! And at the end of it, we came into Christ, we became Victorious because he has won it all for us.
But it doesn't stop there, legalism peaches it stops there and your victorious life exists until you fall into a mistakes and it's gone. But we know surely that our victorious living over sin, devil, all things is ETERNAL. it's not of this world that is ruled with time, it dwells out of time, it's eternal!!! Because it is not a function of what we have done but a function of GOD! and he's ever for us not against us.
After our salvation, the life we live now, is still ordered by God, so, the victorious living we live now is still upheld by God because he is ever in accord with his own and he is the one that does the work in them and through them.
So, Your victory is fully dependent on God, he is the one at work and will always be at work, it is him that causes us to triumph all the days of our lives, no one but him! All you have to do is to rest and trust in him!