'Father's' in the Bible

My little children (believers, dear ones), I am writing you these things so that you will not sin and violate God’s law. And if anyone sins, we have an Advocate [who will intercede for us] with the Father: Jesus Christ the righteous [the upright, the just One, who conforms to the Father’s will in every way—purpose, thought, and action].

Stop loving the world and the things that are in the world. If anyone persists in loving the world, the Father's love is not in him.

For all that is in the world, the lust of the flesh, the lust of the eyes, and the pride of life, isn't the Father's, but is the world's.

If you know that He is absolutely righteous, you know [for certain] that everyone who practices righteousness [doing what is right and conforming to God’s will] has been born of Him.

Every one who believes that Jesus is the Christ is a child of God; and every one who loves the Father loves also Him who is the Father's Child.