TRUTH AND PURE HEART = SANCTIFICATION

John 17:17 Sanctify them through your truth: your word is truth.

John 17:19 And for their sakes I sanctify myself, that they also might be sanctified through the truth.

1 Peter 1:22 Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently: