The Godhead & Salvation

In Revelation 3:14, Jesus called himself the beginning of the creation of God 

Colossians 1:15 gives us further insight to what this means. It says, Who is the image of the invisible God, the firstborn of every creature 

So, when Jesus says that he is the beginning of the creation of God, he's talking about the new creation.

Colossians 3:10&11, And have put on the new man, which is renewed in knowledge after the image of him who created him: Where there is neither Greek nor Jew, circumcision nor uncircumcision, Barbarian, Scythian, bond nor free: but Christ is all, and in all.

Ephesians 4:24, And that ye put on the new man, which after God is created in righteousness and true holiness. 

So, though we are not under the Law we are under Christ,  after the order of Melchizedek, and that's a new law of righteousness and holiness enabled through the grace of the Holy Ghost. Just like apostle Paul said that we are transformed by the renewing of our minds. Adam talked to God every day before the fall and God gave him insights during that time, but he lost it after the fall, forfeiting it to Satan, this is why Satan's descendants were able to build kingdoms, but thanks to Jesus, we have the keys again. 

Hebrews 2:9; 11; 16; 18, But we see Jesus,  was made a little lower than the angels for the suffering of death, crowned with glory and honour; that he by the grace of God should taste death for every man...For both he that sanctifieth and they who are sanctified are all one: for which he is not ashamed to call them brethren...For verily he took not on him the nature of angels; but he took on him the seed of Abraham...For in that he himself hath suffered being tempted, he is able to succour them that are tempted. 

Christ, through the Holy Ghost is transforming us, he's sanctified us through our study and meditation on his word, which gives us the insights to be able to change our character. Also, because he was tempted on all points, he is able, through the Holy Ghost, to give us the strength we need to withstand the temptation when we are tempted. This is why the scripture says that "unto him who is able to keep us from falling", also "and present us faultless before his presence with exceeding joy", faultless because our sins are washed away and he's transforming us from glory to glory, changing our character, making us perfect, sanctifying us, setting us apart, making us holy.

Jesus is in God and God in him. Jesus is in us and we are in him. Jesus is the glory of God in whatever manifestation that is at the time. Jesus lives in God and God is covered/clothed in Jesus. The Holy Ghost is in us and we have put on/clothed ourselves in Jesus through baptism.