"you can be sure that your sin will track you down."(32:23)
There's another thing about tracking. Sometimes, something or someone will "scatter the scent" and the dogs are not able to track - they lose the scent.
The runaway slaves - without the underground railroad, they would have run without destination, without places to stop, hide, rest, as the hounds came after them. God's plan is much like the underground railroad which was a group of well organized, loyal members, gathering in and making disciples, saving lives. And often they were Christians.
Until I am in Heaven, sin will be tracking me, trying to entrap me. I am running in His underground railroad. I am helping others to escape through it too.
Knowing sin will run right on past me as I hide in Him.