Strong's #225: aletheia (pronounced al-ay'-thi-a)
from 227; truth:--true, X truly, truth, verity.
Thayer's Greek Lexicon:
̓́
alētheia
1) objectively
1a) what is true in any matter under consideration
1a1) truly, in truth, according to truth
1a2) of a truth, in reality, in fact, certainly
1b) what is true in things appertaining to God and the duties of man, moral and religious truth
1b1) in the greatest latitude
1b2) the true notions of God which are open to human reason without his supernatural intervention
1c) the truth as taught in the Christian religion, respecting God and the execution of his purposes through Christ, and respecting the duties of man, opposing alike to the superstitions of the Gentiles and the inventions of the Jews, and the corrupt opinions and precepts of false teachers even among Christians
2) subjectively
2a) truth as a personal excellence
2a1) that candour of mind which is free from affection, pretence, simulation, falsehood, deceit
Part of Speech: noun feminine
Relation: from G227
Citing in TDNT: 1:232, 37
Usage:
This word is used 110 times:
2 John 1:1: "all they that have known the truth;"
2 John 1:2: " For the truth's sake, which dwelleth in us, and shall be"
2 John 1:3: "of the Father, in truth and love."
2 John 1:4: "children walking in truth, as we have received a commandment from"
3 John 1:1: "I love in the truth."
3 John 1:3: "and testified of the truth that is in thee, even as thou walkest"
3 John 1:3: "thou walkest in the truth."
3 John 1:4: "children walk in truth."
3 John 1:8: "we might be fellow helpers to the truth."
3 John 1:12: "men, and of the truth itself: yea, and we"