Every attorney-at-law, upon admission to the Bar of this State, shall take and subscribe the following oath or affirmation:
“I do solemnly swear (or affirm) that I will support the Constitution of the United States and the Constitution of the State of Delaware; that I will behave myself in the office of an attorney within the Court according to the best of my learning and ability and with all good fidelity, as well to the Court as to the client; that I will use no falsehood, nor delay any person’s cause through lucre and malice.”