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Does God give you faith or tells you to have faith. See how many scriptures tells us to have faith.
I think that our perseverance and endurance is then to have an unwavering acceptance and trust in His finished work.
I think that we continually exercise our faith by thanking Him and making ourselves available to do the work within us that He promised to finish, through an indwelling presence of God in us.
I trust my God, to never leave me or forsake me, I trust my God in my sealed salvation, and I trust that His promise in me will be fulfilled. But God is the source of that, not me.