In this you greatly rejoice, though now for a little while you may have had to suffer various trials, so that the authenticity of your faith…may result in praise, glory, and honor at the revelation of Jesus Christ. -1 Peter 1:6-7

Faith untried may be true faith, but it is sure to be little faith. I believe in the existence of faith in men who have no trials, but that is as far as I can go. I am persuaded, brethren, that where there is no trial faith just draws breath enough to live, but that is all; for faith, like the fabled salamander, has fire for its native element. Faith never prospers so well as when all things are against her: tempests are trainers, and the lightnings are her illuminators. When a calm reigns on the sea, spread the sails as you will, the ship moves not to its harbour; for on a slumbering ocean the keel sleeps too. Let the winds come howling forth, and let the waters lift up themselves, then, though the vessel may rock, and her deck may be washed with waves, and her mast may creak under the pressure of the full and swelling sail, yet it is then that she makes headway towards her desired haven. No flowers wear so lovely a blue as those which grow at the foot of the frozen glacier; no stars so bright as those which glisten in the polar sky; no water so sweet as that which springs amid the desert sand; and no faith so precious as that which lives and triumphs in adversity. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0585.cfm