Yea, though I walk through the valley of the shadow of death, I will fear no evil: for Thou art with me; Thy rod and Thy staff they comfort me. – Psalm 23:4

“Oh!” says one, “I have no joy; I have very little rest; I have nothing but trouble; deep calleth unto deep at the noise of His waterspouts, and I am so weak, so feeble, so faint, I cannot imagine that the Lord is with me. I see no signs of His presence, neither do I perceive even a star of hope amid the dense darkness of the night.” Listen, dear friend; have you taken Him to be your God? Are you trusting Him? Are you determined to rely on nothing but the finished work of Christ? Then, He is with you; though you do not perceive His Holy Spirit, in the deepest darkness He is with you.

If the Lord had not been with you, your despondency might have become despair. If He had not been with you, your despair might have gone further still. You are yet alive, remember, you have not laid violent hands upon yourself, as you might have done if you had been left to yourself. God is with you, keeping you, even while you live on the very brink of despair. I know that there are some here who were sure God was with them in their darkness because it did not grow any darker. It was a black night, but still it was not altogether dark, there was a gleam of light left. Ah, yes! it was your gracious Lord who gave you that little ray of hope.

Tell me, sad heart, what is it that causes you to hate sin, and makes you so wretched without the presence of the Savior? It is because you have His presence though you do not know it. You have, perhaps, seen your boy play with a magnet and a needle; the needle is above the table, and the magnet, though out of sight, acts upon it, the needle feels the attraction of the magnet, and moves after it; and those desires, those groans, those cries, that inward anguish, that self-despair, that horror of great darkness, all these prove that God is secretly working with you, and drawing you to Himself. He is with you; and if you take Him afresh to be your God, if you come and trust in His promises, I should not wonder but that, even now, your midnight shall burst into a glorious meridian. The Lord send it to you right speedily! Only, do rest in Him. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2471.cfm