Before Jesus of Nazareth was born, he was the word of God and the wisdom of God.
Yes. He was sent to the world as the only begotten Son.
Was there ever a "time" when God didn't have his word or his wisdom?
There was a time when Christ was not the Son.
Acts 13:33 God hath fulfilled the same unto us their children, in that he hath raised up (anistemi) Jesus(Iesous) again(anistemi) ; as it is also written in the second psalm, Thou art my Son, this day have I begotten thee.
Acts 13:37 But he, whom God raised again(egeiro), saw no corruption.
38 Be it known unto you therefore, men and brethren, that through this man is preached unto you the forgiveness of sins:
39 And by him all that believe are justified from all things, from which ye could not be justified by the law of Moses.
40 Beware therefore, lest that come upon you, which is spoken of in the prophets;
41 Behold, ye despisers, and wonder, and perish: for I work a work in your days, a work which ye shall in no wise believe, though a man declare it unto you.
Matthew 16:21 From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again(egeiro) the third day.
Matthew 17:23 And they shall kill him, and the third day he shall be raised again(egeiro). And they were exceeding sorry.
Hebrews 5:5 So also Christ glorified not himself to be made an high priest; but he that said unto him, Thou art my Son, to day have I begotten thee.
6 As he saith also in another place, Thou art a priest for ever after the order of Melchisedec.
7 Who in the days of his flesh, when he had offered up prayers and supplications with strong crying and tears unto him that was able to save him from death, and was heard in that he feared;
8 Though he were a Son, yet learned he obedience by the things which he suffered;
9 And being made perfect, he became the author of eternal salvation unto all them that obey him;
10 Called of God an high priest after the order of Melchisedec.
11 Of whom we have many things to say, and hard to be uttered, seeing ye are dull of hearing.
12 For when for the time ye ought to be teachers, ye have need that one teach you again which be the first principles of the oracles of God; and are become such as have need of milk, and not of strong meat.
Hebrews 7:28 For the law maketh men high priests which have infirmity; but the word of the oath [ie COVENANT], which was since the law, maketh the Son, who is consecrated for evermore.