A wonderful
shammah  (sham-maw')
ruin; by implication, consternation -- astonishment, desolate(-ion), waste, wonderful thing.

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and horrible thing
sha`aruwrah  (shah-ar-oo-raw')
something fearful -- horrible thing.

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is committed
hayah  (haw-yaw)
to exist, i.e. be or become, come to pass (always emphatic, and not a mere copula or auxiliary)

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in the land
'erets  (eh'-rets)
the earth (at large, or partitively a land) -- common, country, earth, field, ground, land, natins, way, + wilderness, world.New American Standard Bible
"An appalling and horrible thing Has happened in the land:

King James Bible
A wonderful and horrible thing is committed in the land;

Holman Christian Standard Bible
A horrible, terrible thing has taken place in the land.

International Standard Version
"An appalling and horrible thing has happened in the land:

NET Bible
"Something horrible and shocking is going on in the land of Judah:

GOD'S WORD® Translation
"Something horrible and disgusting is happening in the land:

King James 2000 Bible
An appalling and horrible thing is committed in the land;Jeremiah 5:30
Jeremiah 5:30 NIV
Jeremiah 5:30 NLT
Jeremiah 5:30 ESV
Jeremiah 5:30 NASB
Jeremiah 5:30 KJV