Zechariah 12:10 NAS

10 "I will 1pour out on the house of David and on the inhabitants of Jerusalem, athe Spirit of grace and of supplication, so that they will look on Me whom they have 2pierced; and they will mourn for Him, as one 3mourns for an only son, and they will weep bitterly over Him like the bitter weeping over a firstborn.

References for Zechariah 12:10