The existence of genuine faith and a claim to perfected faith are not identical. Someone may know that they currently affirm the divine message yet refrain from claiming flawless obedience, complete sincerity, or a guaranteed final outcome.
Present faith concerns actual assent. Perfection of faith can additionally concern righteous conduct, sincerity, perseverance, and rank.
When a qualification refers to perfection or ultimate salvation, it need not negate present belief. Still, clear language is important so the intended humility is not mistaken for disbelief or doubt about the essentials of faith.