In 1978, LDS Church president Spencer W. Kimball said he received a revelation that extended the priesthood to all worthy male members of the church without regard to race or color. In 2013, The LDS church denounced the curse of Ham explanation for withholding the priesthood from black Africans. However, the essays have not been well publicized, and many members remain unaware of the essays and hold to racist beliefs that had been taught in the past. The Book of Abraham is still considered scripture in the LDS church. The Old Testament student manual, which is published by the Church and is the manual currently used to teach the Old Testament in LDS Institutes, teaches that Canaan could not hold the priesthood because of his ancestral lineage but mentions nothing of race or skin color: