17:17

Sanctify them: Or “Make them holy; Set them apart,” that is, for sacred service to God. When Jesus’ followers obey the truth of God’s Word, they become sanctified, or purified. (1Pe 1:22) They will thus stand out as “no part of the world,” which does not adhere to God’s truth.​—Joh 17:16.

your word is truth: Jehovah’s Word presents things as they really are, revealing his attributes, purposes, and commands, as well as the true state of affairs among mankind. In harmony with Jesus’ prayer, God’s Word of truth shows what is required for a person to be sanctified, or set apart, by Jehovah for His service, and then to remain in a sanctified state.