Centuries ago, missionaries went amongst the barbaric tribes of Western Europe.
They found that many of these barbarians insisted on keeping their right hands out of the baptismal water when they were plunged beneath its surface during their baptism.
They were willing to become followers of Christ in every aspect except one; they wanted their strong right arm left free to kill enemies and to use as they please. (Encyclopedia of Illustrations).
“One leak will sink a ship; and one sin will destroy a sinner.” - John Bunyan.
Jas 2:10 (GW) says: “If someone obeys all of God's laws except one, that person is guilty of breaking all of them.”