Proverbs 18:17

¹⁵ The heart of the discerning acquires knowledge, and the ear of the wise seeks it out.

¹⁶ A man’s gift opens doors for him, and brings him before great men.

The first to state his case seems right until another comes and cross-examines him.

¹⁸ Casting the lot ends quarrels and separates strong opponents.

¹⁹ An offended brother is harder to win than a fortified city, and disputes are like the bars of a castle.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: The first to state his case seems right until another comes and cross-examines him.
KJV: He that is first in his own cause seemeth just; but his neighbour cometh and searcheth him.
WEB: He who pleads his cause first seems right— until another comes and questions him.
ASV: He that pleadeth his cause first [seemeth] just; But his neighbor cometh and searcheth him out.
DARBY: He that is first in his own cause [seemeth] just; but his neighbour cometh and searcheth him.
BLB: The first in his dispute [seems] right, until his neighbor comes and examines him.

ÅB: Den som taler først i en rettsstrid, synes å ha rett; men så kommer motparten og gransker hans ord.
OTB: Den første som presenterer sin sak virker rett, inntil en annen kommer og undersøker dem.
B1930: Den som taler først i en rettsstrid, synes å ha rett; men så kommer motparten og gransker hans ord.

Proverbs 18:13
He who answers a matter before he hears it— this is folly and disgrace to him.
Read in context