When it happens.
When we are dull of light, weak of strength, dark veils clouding our minds. When inspiration is a meaningless word sitting lifeless on a page. When words from the book glance off our eyeballs and spin into empty, limitless space. And the only light we perceive is a dull pin-opening in the surrounding darkness; and the only heat that of wisping smoke of a flamed out candle wick. Let one word force its way into the tiny space left available in the conscious mind, until it expands into a reverberating, overpowering shout of pleading exclamation: SAVIOR! And let the little light shine into a brightening glow that is the awareness of His faithful answer to the imploring call of His beloved one.
It happens to the experienced as well as the neophyte, the mature as well as the youthful.
A bruised reed he will not break,
and a smoldering wick he will not snuff out.
In faithfulness he will bring forth justice; Isaiah 42:3 
Our good Shepherd has in his flock a variety of experiences, some are strong in the Lord, and others are weak in faith, but he is impartial in his care for all his sheep, and the weakest lamb is as dear to him as the most advanced of the flock. Lambs are wont to lag behind, prone to wander, and apt to grow weary, but from all the danger of these infirmities the Shepherd protects them with his arm of power.
He finds new-born souls, like young lambs, ready to perish-he nourishes them till life becomes vigorous; he finds weak minds ready to faint and die-he consoles them and renews their strength. All the little ones he gathers, for it is not the will of our heavenly Father that one of them should perish. What a quick eye he must have to see them all! What a tender heart to care for them all! What a far- reaching and potent arm, to gather them all!
In his lifetime on earth he was a great gatherer of the weaker sort, and now that he dwells in heaven, his loving heart yearns towards the meek and contrite, the timid and feeble, the fearful and fainting here below.
How gently did he gather me to himself, to his truth, to his blood, to his love, to his church! With what effectual grace did he compel me to come to himself! Since my first conversion, how frequently has he restored me from my wanderings, and once again folded me within the circle of his everlasting arm!
The best of all is, that he does it all himself personally, not delegating the task of love, but condescending himself to rescue and preserve his most unworthy servant. How shall I love him enough or serve him worthily? I would fain make his name great unto the ends of the earth, but what can my feebleness do for him?
Great Shepherd, add to thy mercies this one other, a heart to love thee more truly as I ought.
C.H. Spurgeon – Morning and Evening Devotional
A bruised reed shall not break
The tenderness of Christ to weak and ignorant persons is here and in the next clause expressed; by whom young converts or weak believers seem to be designed; who are compared to a “reed”, because worthless with respect to God, whom they cannot profit; and in the view of men, who reckon them as nothing; and in themselves, and in their own view, who judge themselves unworthy of the least of mercies; and because they are weak, not only as all men are, of which weakness they are sensible; but they are weak in grace, especially in faith, and have but little hope, their love is the strongest; and because they are wavering like the reed, tossed to and fro with every wind of doctrine, and shaken with the temptations of Satan, and disturbed with many doubts and fears; and are like a “bruised” reed that is squeezed, and almost broke to pieces, and so of no use; these are broken in heart, under a sense of sin and unworthiness; whose spirits are bruised and wounded with it, and whose hearts are contrite on account of it. On these Christ does not lay his iron rod, but holds out the golden sceptre of his grace to them; he does not call them to service and sufferings beyond their strength; but strengthens, supports, and upholds them with the right hand of his righteousness; he binds up their broken hearts, having poured in the balm of Gilead, his own blood, and the wine and oil of his love; he encourages them in their application to him for salvation, and manifests his pardoning grace, and restores comforts to them, and revives their souls:
and the smoking flax shall he not quench;
or, “the wick of a candle; which just going out, has some heat, a little light, smokes, and is offensive; so the persons intended by it are fired or lighted by the divine word; have some heat of affection in them to spiritual things, but have but little light; into the corruption of nature into the glories of Christ’s person; into the doctrines of the Gospel; into the everlasting love of God, and the covenant of grace; and but little light of joy and comfort, and this almost gone, and seemingly ready to go out; and yet Christ will not extinguish it, or suffer it to be extinct; he does not discourage small beginnings of grace, or despise the day of small things; he blows up their light into a flame; he increases their spiritual light and knowledge; supplies them with the oil of grace; trims, snuffs, and causes their lamps to burn brighter.
The Targum is,
“the meek, who are like to a bruised reed, shall not be broken; and the poor, who are as obscure as flax (or a lamp ready to go out), shall not be extinguished.”