Berean Standard Bible (BSB)
The heart knows its own bitterness, and no stranger shares in its joy.
World English Bible (WEB)
The heart knows its own bitterness and joy; he will not share these with a stranger.
Strong's King James
The heart{H3820} knoweth{H3045}{(H8802)} his own{H5315} bitterness{H4787}; and a stranger{H2114}{(H8801)} doth not intermeddle{H6148}{(H8691)} with his joy{H8057}.
The F.O.G *
The heart knows its own bitterness, A stranger doesn't share in its joy.
The F.O.G Message *
Young's Literal Translation
The heart knoweth its own bitterness, And with its joy a stranger doth not intermeddle.