Once you have located all the prophets in the grid, the remaining letters will spell out another prophet sent by God.

ZECHARIAHH
ELIJAHHGAA
PKALMSAADI
HUEEUOCBLA
AKSUHMIUUS
NKOMAAMSHI
IAHANOJOEL
ABDSAHSILE
HAGGAIANHI
EHAIDABOLA

AGABUS
HABAKKUK
JOEL
SAMUEL
AHIJAH
HAGGAI
JONAH
ZECHARIAH
AMOS
HOSEA
MICAH
ZEPHANIAH
ELIJAH
HULDAH
NAHUM
ELISHA
ISAIAH
OBADIAH

solution...