To command; charge.
For when Moses had spoken every precept to all the people according to the law, he took the blood of calves and of goats, with water, and scarlet wool, and hyssop, and sprinkled both the book, and all the people, saying, This is the blood of the testament which God hath ENJOINED unto you. ( Hebrews 9:19-20 )
Bibliography Information"Entry for 'Enjoin'". A King James Dictionary.