The Holy Ghost has many roles

Personal revelation is essential, but it is only one part of the work of the Holy Ghost. As the scriptures attest, the Holy Ghost also testifies of the Savior and God the Father.6 He teaches us “the peaceable things of the kingdom”7 and causes us to “abound in hope.”8 He “leadeth [us] to do good … [and] to judge righteously.”9 He gives “to every man [and woman] … a [spiritual] gift … that all may be profited thereby.”10 He “giveth [us] knowledge”11 and “bring[s] all things to [our] remembrance.”12 Through the Holy Ghost, we “may be sanctified”13 and receive “a remission of [our] sins.”14 He is the “Comforter,” the same who was “promised unto [the Savior’s] disciples.”15

Robert D. Hales http://www.lds.org/general-conference/2016/04/the-holy-ghost?lang=eng