Any mortgage of lands, worded in substance as follows: “A.B. mortgages and warrants to C.D. (here describe the premises), to secure the payment of (here insert the sum for which the mortgage is granted, or the notes or other evidences of debt, or description thereof, sought to be secured, also the date of payment),” the said mortgage being dated, and duly signed and acknowledged by the grantor, shall be deemed and held to be a good and sufficient mortgage to the grantee, his or her heirs, assigns, executors and administrators, with warranty from the grantor and his or her legal representatives of a perfect title in the grantor, and against all previous encumbrances; and if in the above form the words “and warrants” be omitted, the mortgage shall be good without warranty.