Before I fall I'm sure to curse you all in Jesus' name
from Ab-Soul (Ft. Black Hippy, Jay Rock, Kendrick Lamar & Schoolboy Q) – Black Lip Bastard (Remix) Lyrics 5 on Rap Genius
Meaning
One of the Ten Commandments is not to take the Lord’s name in vain.
Thus by cursing them in Jesus' name (which you probably shouldn’t do according to the commandments) the curse is even more effective. That’s why he says precedes the curse by saying he will do this before he falls. It will be his last stand.
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