They said I got it honest now I gotta give it light
To have something honest is a old term meaning something like you got it from your mom or dad. Lupe is saying he got the gift of gab honestly so it is only right that he puts that to good use.
Lu’s been characteristically “real” since pretty much the beginning, but that was back when he was a relatively unknown Chicago local who was spittin' about gangsta shit. Now, he feels it’s his responsibility to start “breathing life” into hip-hop, with positivity. To give something light is also an expression meaning to explain and preach about that subject. Lupe knows a lot of things that he wants to share through his rhymes.
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