Strong’s Hebrew
H4123 — mahathallah
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
מַהֲתַלָּה
mahathallah — pronounced mah-hath-al-law
from 2048; a delusion:--deceit. see H02048
1 occurrence in the KJV.
Isaiah 30:10
Which say to the seers, See not; and to the prophets, Prophesy not unto us right things, speak unto us smooth things, prophesy deceits: