I have delineated thee. An allusion to some practice of the ancients to mark the skin with some sort of symbol of a temple, or a city, to show respect for them. See Isa. 44:5:
"One shall say, I am the Lord's; and another shall call by the name of Jacob; and another shall write on his hand, To Jehovah." 2
The early Christians used to mark their wrists or arms with the sign of the cross, or with the name of Christ. Comp. Rev. 20:4.