Hello CherubRam, the NIV translators (as well the translation teams of all of our other translations/paraphrases) could have chosen to translate 1 John 5:11 as you are attempting to do above, but none of them did, INCLUDING (once again) the non-Trinitarian "translation" that was done by the Jehovah's Witnesses (the New World Translation).
See again the collection of our translations and paraphrases below, including our "literal" translations and, of course, at the very bottom, the JW's, non-Trinitarian, New World Translation.
And this is the testimony: God has given us eternal life, and this life is in his Son.
And this is what God has testified: He has given us eternal life, and this life is in his Son.
And this is the testimony, that God gave us eternal life, and this life is in his Son.
And this is that testimony: God has given us eternal life, and this life is in His Son.
And this is the testimony: that God has given to us eternal life, and this life is in His Son.
And this is the record, that God hath given to us eternal life, and this life is in his Son.
And this is the testimony: that God has given us eternal life, and this life is in His Son.
And the testimony is this, that God has given us eternal life, and this life is in His Son.
And the testimony is this, that God has given us eternal life, and this life is in His Son.
And the witness is this, that God has given us eternal life, and this life is in His Son.
And the witness is this, that God gave us eternal life, and this life is in His Son.
And the testimony is this: God has given us eternal life [we already possess it], and this life is in His Son [resulting in our spiritual completeness, and eternal companionship with Him].
And this is the testimony: God has given us eternal life, and this life is in his Son.
And this is the testimony: God has given us eternal life, and this life is in His Son.
And the witness is this, that God gave unto us eternal life, and this life is in his Son.
And this is the testimony: God has given us Eternal Life, and that life is in his Son.
God has also said he gave us eternal life and this life comes to us from his Son.
And this is the testimony, that God hath given to us eternal life. And this life is in his Son.
And the witness is this, that God gave unto us eternal life, and this life is in his Son.
This is the testimony: God has given us eternal life, and this life is found in his Son.
The testimony is this: God has given us eternal life, and this life has its source in his Son.
This is the testimony: God has given us eternal life, and this life is found in his Son.
and this is the testimony, that God gave continuous life to us, and this life is in His Son;
And this is that testimony: God has given us eternal life, and this life is in His Son.
And this is the testimony: God gave us eternal life, and this life is in his Son.
And this is the testimony: God has given us eternal life, and this life is in his Son.
And this is the testimony: God gave us eternal life, and this life is in his Son.
The testimony is this, that God gave to us everlasting life, and this life is in his Son.
And this is the testimony, that God hath given to us eternal life: and this life is in his Son.
And that testimony is to the effect that God has given us the Life of the Ages, and that this Life is in His Son.
The testimony is this: that God gave to us eternal life, and this life is in his Son.
and this is the testimony, that life age-during did God give to us, and this -- the life -- is in His Son;
and this is the testimony, that God gave continuous life to us, and this life is in His Son;
And this is the testimony: that God has given to us eternal life, and this life is in His Son.
and this is the testimony, that life age-during did God give to us, and this -- the life -- is in His Son;
And this is the testimony, that God has given us eternal life, and this life is in his Son.
And this is the testimony, that God has given eternal life to us and this life is in His Son.
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And this is the witness, that God gave us everlasting life, and this life is in his Son.
--David