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John 17:6 I have manifested thy name unto the men which thou gavest me out of the world: thine they were, and thou gavest them me; and they have kept thy word.
Using Strong’s Concordance:
Manifested <5319> phaneroo; Translated in the King James Version – ‘make manifest’ 19 times, ‘appear’ 12 times, ‘manifest’ 9 times, ‘show’ 3 times, ‘be manifest’ 2 times, ‘show (one’s) self’ 2 times, ‘manifestly declare’ 1 time, ‘manifest forth’ 1 time.
Meaning: to make visible or known what has been hidden or unknown, whether by words, or deeds, or in any other way
In scriptural terms, to manifest God’s name, is to demonstrate the character of God by words and deeds. This Jesus undoubtedly did. The words he spoke were the words of his Father
John 12:49 For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak.
John 17:8 For I have given unto them the words which thou gavest me; and they have received them, and have known surely that I came out from thee, and they have believed that thou didst send me.
His character was that of his Father.
John 1:14 And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.
John 14:7 If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him.
John 14:9 Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father?
If we want to know what God is like we must look at the words and works of Jesus Christ. It is necessary for our salvation that we understand the characteristics of God and manifest them (make them known) to others by what we say and do.
John 17:3 And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.