Romans 5:20
The law came in that the trespass might abound; but where sin abounded, grace abounded more exceedingly,
World English Bible (Public Domain)
In context
Before · Romans 5:18–19
18So then as through one trespass, all men were condemned; even so through one act of righteousness, all men were justified to life. 19For as through the one man’s disobedience many were made sinners, even so through the obedience of the one, many will be made righteous.
20The law came in that the trespass might abound; but where sin abounded, grace abounded more exceedingly,
After · Romans 5:21
21that as sin reigned in death, even so grace might reign through righteousness to eternal life through Jesus Christ our Lord.