The peculiar construction of this verse rightly expresses the way the believer should think about his state before God. Something is said to be true of us now because of what has happened in the past, but this something is made conditional on what we do now and in the future.
Perseverance is stated in terms of maintaining confidence to the end. Do we count Christ as faithful? Do we judge him to be Lord of providence so that nothing that happens to us is unexpected to him however much we were taken by surprise and dismayed? Our confidence is in him and we bring our perplexities to him as one who knows the way we take and has planned it all. We see Christ as worthy of the highest level of trust, so that he was never outmanoeuvred by his enemies, never mistaken about the facts, never needing to take second place. As time has gone on and man has learned more about the world, he has learned no true fact that was not already known to Jesus Christ. Indeed, Christ is the fountain of all knowledge and so much superior to all created intelligence that no one can search his understanding. We must not lose this confidence. When we are tempted to doubt his knowledge or his power or his sympathy and concern for us as individuals, we come again and remind ourselves of his unchanging greatness. We have taken hold of a Saviour by faith, who will never be defeated, never be thwarted, who has received a name that is above every name, that at the name of Jesus every knee shall bow and every tongue confess that he is Lord. He is the source of our confidence and strength. The Christian has a harbour into which the ship of his life will come at last, and the anchor of his hope is already fixed there to help bring him into safety.