Psalm 27:4 has been set to music and we often sing this verse in our Fellowship--
 
“One thing have I desired of the LORD,
That will I seek after;
That I may dwell in the house of the LORD
All the days of my life,
To behold the beauty, the beauty of the LORD,
To inquire in His temple, the temple of the LORD.
To behold the beauty, the beauty of the LORD, 
To inquire in His temple, the temple of the LORD.”
 
(Read the whole Psalm.  It is a Psalm of David and in my study Bible, NKJV, it is entitled “Trust in the Lord and Be Not Afraid”)
 
Scripture give us another Psalm of David that gives us the characteristic of who may dwell there.  Psalm 15 and in my study Bible it is entitled, 
“The Characteristics of the Godly”
 
“LORD, who may abide in Your tabernacle?
Who may dwell in Your holy hill?”  Vs.1
 
“He who walks uprightly, 
And works righteousness,
And speaks the truth in his heart;
He who does not backbite with his tongue
Nor does evil to his neighbor,
Nor does he take up a reproach against his friend;
In whose eyes a vile person is despised,
But he honors those who fear the LORD;
He who swears to own hurt and does not change;
He who does not put out his money at usury,
Nor does he take a bribe against the innocent.”  Vs. 2-5a
 
“He who does these things shall never be moved.”  Vs. 5b
(A quick look at 2 Peter 1:10 says to Believers,
“Therefore, brethren, be even more diligent to make your calling and election sure, for if you do these things you will never stumble.)
 
Scripture faithfully gives us cross references. 
See, Psalm 24: 3-5,
“Who may ascend into the hill of the LORD?
Or who may stand in His holy place?
He who has clean hands and a pure heart,
Who has not lifted up his soul to an idol,
Nor sworn deceitfully.
He shall receive blessing from the LORD,
And righteousness from the God of his salvation.”
 
How grateful Believers are that by God’s free gift of faith we have been saved.
“For by grace you have been saved through faith, and that not of yourselves; it is the gift of God.”  Ephesians 2:8 
 
And having been saved we have been imputed with the very righteousness of Christ.
“For He (God) made Him (Jesus Christ) who knew no sin to be sin for us, that we might become the righteousness of God in Him.”  
2 Corinthians 5:21
 
Therefore, Believers have been given admission!  Hallelujah!
“I (Jesus) am the door.  If anyone enters by Me, he will be saved, and will go in and out and find pasture.”  John 10:9
 
“For through Him (Christ) we both have access by one Spirit to the Father.” Ephesians 2:18 
 
“In Him (Christ) and through faith in Him we may approach God with freedom and confidence.”  Ephesians 3:12
 
In the Revelation, Jesus Christ’s message to the church at Philadelphia,
“I know your works. See, I have set before you an open door, and no one can shut it; for you have a little strength, have kept My word, and have not denied My name.”  Revelation 3:8
 
Thank you Father for making the way for Your elect to enter Your presence freely in Your glorious Son, our Lord Jesus Christ!  Thank you Jesus for your love that redeemed us and reconciled us to the Father.  Thank you Holy Spirit who dwells in us and has sealed each Believer, a guarantee of our inheritance in Christ Jesus.  We are continually in God’s presence!  With grateful hearts we say thanks you!  We worship and adore you Lord God.  Amen