So then you are no longer strangers and aliens, but you are fellow citizens with the saints, and are of God’s household, having been built on the foundation of the apostles and prophets, Christ Jesus Himself being the corner stone, in whom the whole building, being fitted together, is growing into a holy temple in the Lord, in whom you also are being built together into a dwelling of God in the Spirit.
New American Standard Bible, 1995 Edition
There are several ideas that can be derived, but the core is that there is only one foundation for any and all decisions in your life, and that is the apostles and the prophets. Their words are found in only one place: the Bible.
But, St. Paul also says, “… Christ Jesus Himself being the corner stone,” so you cannot divorce the words of the Bible from the purest fact that everything was meant to be under the kingship of Jesus.