Col 1:15  Who is the image of the invisible God, the firstborn of every creature: 

Heb 1:1  God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets, 
Heb 1:2  Hath in these last days spoken unto us by his Son, whom he hath appointed heir of all things, by whom also he made the worlds;

1Jo 1:1  That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, of the Word of life; 

Notice that Christ was the Son of God before creation.

Pro 30:4  Who hath ascended up into heaven, or descended? who hath gathered the wind in his fists? who hath bound the waters in a garment? who hath established all the ends of the earth? what is his name, and what is his son's name, if thou canst tell? 

The Father gave life to Jesus Christ, this would not have been the case if Christ always existed.

Joh 5:26  For as the Father hath life in himself; so hath he given to the Son to have life in himself;