Numbers 32:23

32:23 “But if you do not do this, then look, you will have sinned ¹  against the Lord. And know that your sin will find you out.

Numbers 35:26

35:26 But if the slayer at any time goes outside the boundary of the town to which he had fled,

¹ tn The nuance of the perfect tense here has to be the future perfect.