From Grace Gems
These are God's own words! Man cannot say so. There  are many sensitive fibers in the soul, which the best and tenderest human  sympathy cannot touch. But the Prince of Sufferers, He who led the way in  the path of sorrow, "knows our frame." 
When crushing bereavement lies like ice on the heart--when the  dearest earthly friend cannot enter into the peculiarities of our grief--Jesus  can! Jesus does! He who once bore my sins--also carried my  sorrows. That eye, now on the throne--was once dim with  weeping!
Israel had long  groaned under bondage. God appeared not to know it--or, if He did know  it--not to care. He seemed, like Baal, to be "asleep". Yet at that very  moment--His pitying eye was yearningly beholding His enslaved people. It  was then that He said, "I know their  sorrows!"
Just so, He may seem at times thus to forget and forsake  us--leaving us to utter the plaintive cry, "Has God forgotten to be  gracious?" When all the while, He is bending over us in tenderest love. He  often allows our needs to reach their extremity--that He may stretch forth His  supporting hand, and reveal the plenitude of His grace! "You can see how the  Lord was kind to Job at the end--for the Lord is full of tenderness and  mercy!" James 5:11
And God fully "knowing" our sorrows--is a blessed guarantee that  none will be sent, but those which He sees to be needful. "I will not,"  says He, "make a full end of you--but I will correct you in  measure." Jeremiah 30:11
All the trials which He sends--are precisely meted out--and wisely  apportioned. There is nothing accidental or random or  unnecessary--no excess thorn--no superfluous pang!
"You keep track of all my sorrows! You have collected all my  tears in Your bottle! You have recorded each one in Your book!" Psalm  56:8. Each one is counted and recorded--drop by drop--tear by tear! Tears are  sacred things among the treasures of God!
Suffering believer, the iron may have entered deeply into  your soul; yet rejoice! Jesus, a sorrowing, sympathizing Jesus--"knows" your  aching pangs and burning tears, and He will "come down to deliver  you!"
And of this divine sympathy, we are also assured in the New  Testament, "For we do not have a high priest who is unable to sympathize with  our weaknesses, but we have one who has been tested in every way, just as we  are!" Hebrews 4:15. What an elevating truth! We have the Sympathy of the  God-Man-Mediator in our sorrows! What a source of exalted joy, to the  stripped and desolate heart! What a green pasture to lie  down upon, amid the windy storm and tempest, or in the dark and cloudy day!  
The sympathy of man is cheering and comforting; but  "thus far shall you go, and no farther." Man's sympathy is finite--limited--and  often selfish! There are nameless and numberless sorrows on earth, which are far  beyond the reach of all human alleviation!
The sympathy of Jesus alone, is . . .  
exalted,
pure,
infinite,
removed from all taint of  selfishness!
Jesus has Himself passed through every experience of woe. There  are no depths of sorrow or anguish into which I can be plunged--but His  everlasting arms are lower still! He has been called "The great sympathetic  nerve of His Church, over which the afflictions and oppressions, and  sufferings of His people continually pass!" 
Child of Sorrow! A human heart beats on Heaven's  Throne--and He has your name written on that heart! He cares for you as if no  other claimed His regard--as if you were  the only object of His care!
He "has been tested in every way, just as we are!" Blessed  assurance! I never can know a sorrow into which the "Man of Sorrow" cannot  enter. Ah rather, in the midst of earth's most lacerating trials--let me  listen to the unanswerable challenge from the lips of a suffering Savior, "Was  there ever any sorrow, like unto My sorrow!" Yet He willingly drank the cup  of wrath! He did not shrink back from the appointed cross! And even when He  hung upon the bitter tree--He refused the sour wine which would have assuaged  the rage of thirst and mitigated physical suffering. 
Are we tempted at times to murmur under God's afflicting  hand? "Consider Him who endured such opposition from sinful men, so that you  will not grow weary and lose heart!" Shall we hesitate to bear any cross  which our Lord and Master sees fit to lay upon us--when we think of the  infinitely weightier Cross He so meekly and willingly carried for  us?
Jesus has some wise and gracious purpose in every  mysterious chastisement. His language is, "Hear the rod--and Him who has  appointed it!" Micah 6:9. He has too kind and loving a heart--to cause us one  needless or superfluous pang!