Something to consider... All foundations have four corners.
Jesus said..."Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
Therefore whosoever heareth these sayings of mine, and doeth them, I will liken him unto a wise man, which built his house upon a rock:
And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell not: for it was founded upon a rock.
And every one that heareth these sayings of mine, and doeth them not, shall be likened unto a foolish man, which built his house upon the sand:
And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell: and great was the fall of it." Matt 7:21-27
Foundations begin with a corner stone and three corners are added to secure a structure:
"Now therefore ye are no more strangers and foreigners, but fellowcitizens with the saints, and of the household of God;
And are built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner stone;"Ephesians 2:19-20
Jesus is the corner stone. Where do the other 3 corners factor in? Notice the scripture above says the apostles and prophets show us the foundation. Apostle Peter had the keys to the kingdom and expressed the answer in Acts chapter 2; Repentance, water baptism in Jesus name for the remission of sin, and the infilling of the Holy Ghost.
The house foundation is built upon the rock which is Jesus and Christians obey the gospel message given by Peter and the foundation becomes complete. Jesus knows us, we know Him, and our walk with Him begins. Jesus told his disciples, before He left, wait here don't go anywhere until you are endued with power.
"...Thus it is written, and thus it behoved Christ to suffer, and to rise from the dead the third day:
And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem.
And ye are witnesses of these things.
And, behold, I send the promise of my Father upon you: but tarry ye in the city of Jerusalem, until ye be endued with power from on high." Luke 24:46-49