The heart knows its own bitterness, and no stranger shares its joy.
Proverbs 14:10
He was despised and rejected by men,
a man of sorrows and knowing grief;
and as one from whom men hide their faces
he was despised, and we esteemed him not.
Isaiah 53:3
The history of the soul is only fully known and felt by the conscious subject. Each knoweth his own bitterness, deep, interior. The most poignant sufferings often arise from causes, which cannot be told to our dearest friend. No two of us are framed alike; and this diversity of mind and character precludes a perfect reciprocity even in the warmest glow of human sympathy. Each only knows where the heart is wrung. Each therefore must in a measure tread a solitary path, and in that path often submit to be misunderstood.
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But think of Him, who made himself "a man of sorrows," that he might be "touched with the feeling of our infirmities." (Isaiah 53:3, Hebrews 4:15). This is not the common love to the whole family, but an individual interest of fellowship, as if each had his whole heart, and each was loved alone. The heart's bitterness is experimentally known, and effectually relieved. (Isaiah 50:4-5) Man--very man as he is even on the throne of God--he is alive to all our sorrows. (Isaiah 63:9) None of his members are too low for his highest and most endearing thoughts. Into this bosom we may pour the tale of woe, which no ear besides can receive. We may not be able to comprehend it. But he will make us feel, that his sympathy with sorrow is no fiction, but a precious reality. My Saviour! Has my heart a bitterness, that thou dost not know, that thou dost not feel with me, and for which thou dost not provide a present cordial and support?
--Charles Bridges, Proverbs: Geneva Commentary Series, p.175-176
A man of many companions may come to ruin,
but there is a friend who sticks closer than a brother.
Proverbs 18:24
Since then we have a great high priest who has passed through the heavens, Jesus, the Son of God, let us hold fast our confession. For we do not have a high priest who is unable to sympathize with our weaknesses, but one who in every respect has been tempted as we are, yet without sin. Let us then with confidence draw near to the throne of grace, that we may receive mercy and find grace to help in time of need.
Hebrews 4:14-16