What sin has your infant committed?
Changed a diaper recently? ;-)
Well, for one thing, they speak lies. (Psalm 58:3).
Ahhhh, infants don't "speak"? Hey, you're the one arguing against the clear wording of Scripture, not me. Scripture says that infants come from the womb speaking lies. Ever heard of "body language"? "Poker tells"? There are more ways to "speak" than just "speaking English".
And Scripture specifically declares that infants enter the world actively practicing the communication of deceit -- speaking lies.
You do not believe this, of course, but that is because your theology is Anti-Biblical.
Gosh, you hate Biblical Theology!!