10 Heb “they are thrown down by the hands of a cliff, their judges.” The syntax of the Hebrew text is difficult and the meaning uncertain. The perfect verbal form is understood as rhetorical; the psalmist describes the anticipated downfall of the wicked as if it had already occurred. “Their judges” could be taken as the subject of the verb, but this makes little, if any, sense. The translation assumes the judges are the agents and that the wicked, mentioned earlier in the psalm, are the subjects of the verb.
11 It is unclear how this statement relates to the preceding sentence. Perhaps the judges are the referent of the pronominal subject (“they”) of the verb “will listen,” and “my words” are the referent of the pronominal subject (“they”) of the phrase “are pleasant.” The psalmist may be affirming here his confidence that he will be vindicated when he presents his case before the judges, while the wicked will be punished.
12 Heb “like splitting and breaking open in the earth.” The meaning of the statement and the point of the comparison are not entirely clear. Perhaps the psalmist is suggesting that he and other godly individuals are as good as dead; their bones are scattered about like dirt that is dug up and tossed aside.

In other versions

When their judges are thrown over the cliff,

then they shall hear my words, for they are pleasant.

As when one plows and breaks up the earth,

so shall our bones be scattered at the mouth of Sheol.

Their rulers will be thrown down from the cliffs,

and the wicked will learn that my words were well spoken.

They will say, “As one plows and breaks up the earth,

so our bones have been scattered at the mouth of the grave.”

When their rulers will be thrown off

the sides of a cliff,

the people will listen to my words,

for they are pleasing.

As when one plows and breaks up the soil,

turning up rocks,

so our bones have been scattered

at the mouth of Sheol.

When their leaders are thrown down from a cliff,

the wicked will listen to my words and find them true.

Like rocks brought up by a plow,

the bones of the wicked will lie scattered without burial.

When their judges are thrown down the sides of a cliff,

then they will understand that my words were pleasant.

As when one plows and breaks up the earth,

so our bones are scattered at the mouth of Sheol.

When their judges are overthrown in stony places,

They shall hear my words; for they are sweet.

Our bones are scattered at the grave’s mouth,

As when one cutteth and cleaveth wood upon the earth.

Public Domain