There's no apology needed, not from Ezra perspective.

"I stole from them," he explained lightly. "Figuring if they were stealing from Imperials, it might be something really worth trading or selling. And got caught up in their mission. And followed that...singing more, and found Kanan's lightsaber and, um, a holocron, although I had no idea what it was."

He paused, realizing Ben might be making an assumption that wasn't accurate. "I...wasn't raised in the Temple. I, um, I couldn't have been," he tried to explain, fumblingly. "I was born the day Palaptine declared the Republic an Empire."

He met Ben's eye, with a grim, knowing look, but he was pretty sure that math won't add up, on Ben's end. But that was the truth.