# For just as the Father has life in himself, so he has also given to the Son so that he has life in himself
The word "For" marks a comparison. The Son of God has the power to give life, just as the Father does.
# Father ... Son
These are important titles that describe the relationship between God and Jesus. It is best to translate “Father” and “Son” with the same words that your language uses to refer to a human father and a human son.
# life
This means spiritual life.