Exodus 12:23-25

Young's Literal Translation

²³ `And Jehovah hath passed on to smite the Egyptians, and hath seen the blood on the lintel, and on the two side-posts, and Jehovah hath passed over the opening, and doth not permit the destruction to come into your houses to smite.

²⁴ `And ye have observed this thing, for a statute to thee, and to thy sons -- unto the age;

²⁵ and it hath been, when ye come in unto the land which Jehovah giveth to you, as He hath spoken, that ye have kept this service;