Importance of Sound Doctrine

Does it matter what one believes, so long as he is sincere?BR-ASI9 75.1

“God hath from the beginning chosen you to salvation through sanctification of the Spirit and belief of the truth.” 2 Thessalonians 2:13.BR-ASI9 75.2

What advice was given to Timothy while preparing for the gospel ministry?BR-ASI9 75.3

“Till I come, give attendance to reading, to exhortation, to doctrine. . . . Take heed unto thyself, and unto the doctrine.” 1 Timothy 4:13-16.BR-ASI9 75.4

What similar instruction was given to Titus?BR-ASI9 75.5

“But speak thou the things which become sound doctrine:” “in all things shewing thyself a pattern of good works: in doctrine shewing uncorruptness, gravity, sincerity.” Titus 2:1, 7.BR-ASI9 75.6