The meaning of “ἀληθινός”

“If therefore ye have not been faithful in the unrighteous mammon, who will commit to your trust the true riches?”

“Then cried Jesus in the temple as he taught, saying, Ye both know me, and ye know whence I am: and I am not come of myself, but he that sent me is true, whom ye know not.”

“For they themselves shew of us what manner of entering in we had unto you, and how ye turned to God from idols to serve the living and true God;”

“For Christ is not entered into the holy places made with hands, which are the figures of the true; but into heaven itself, now to appear in the presence of God for us:”

“And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.”