Lord, who shall abide in thy tabernacle? - The literal translation of this verse is, "Lord, who shall sojourn in thy tabernacle? who shall dwell in the mountain of thy holiness?" Fwor the proper understanding of this question we must note the following particulars: -

1. The tabernacle, which was a kind of moveable temple, was a type of the Church militant, or the state of the people of God in this world.

2. Mount Zion, the holy mount, where the temple was built, was the type of the kingdom of heaven. There the ark became stationary, and was no longer carried about from place to place; and the whole was typical of the rest that remains for the people of God.

3. The Tabernacle was a temporary and frequently-removed building, carried about from place to place, and not long in any one place. Concerning this it is said: מי יגור mi yagur, "Who shall lodge, or sojourn," there? It is not a residence, or dwelling-place, but a place to lodge in for a time.

4. The Temple was a fixed and permanent building; and here it is inquired, מי ישכן mi yiscon, "Who shall dwell, abide," or have his permanent residence, there?

5. The tabernacle being a migratory temple, carried about on the shoulders of the priests and Levites, there was no dwelling there for any; they could but lodge or sojourn.

6. The temple being fined, the priests, Levites, etc., became permanent occupiers. There was no lodging or sojourning, but permanent residence for all connected with it.

7. The tabernacle is, therefore, a proper type of the Church militant, wandering up and down, tossed by various storms and tempests; the followers of God, having here no continuing city; sojourning only on earth to get a preparation for eternal glory.

8. The temple is also a proper type or emblem of the Church triumphant in heaven. "Here the wicked cease from troubling, and the weary are at rest." It is the dwelling-place the eternal residence, of all who are faithfui unto death, who are made pillars in that temple of God, to go no more out for ever.

The questions therefore are,

1. Who can be considered a fit member of the Church of Christ here below? and,

2. Who shall be made partakers of an endless glory? In answer to these questions, the character of what we may term a true Israelite, or a good Christian, is given in the following particulars: -

abide. Heb. sojourn
holy

Psalm 2:6 Yet have I set my king on my holy hill of Zion.

Psalm 3:4 I cried to the LORD with my voice, and he heard me out of his holy hill. Selah.

Psalm 43:3,4 O send out your light and your truth: let them lead me; let them bring me to your holy hill, and to your tabernacles...

Psalm 87:1-3 His foundation is in the holy mountains...

Hebrews 12:22 But you are come to mount Sion, and to the city of the living God, the heavenly Jerusalem, and to an innumerable company of angels,

Revelation 14:1 And I looked, and, see, a Lamb stood on the mount Sion, and with him an hundred forty and four thousand...

Thus Then what is Written, "The Mouth that Lieth...
31. Thus then what is written, "The mouth that lieth, slayeth the soul;" [2351] of what mouth it speaketh, is the question. For in general when the Scripture speaks of the mouth, it signifies the very seat of our conception [2352] in the heart, where is approved and decreed whatever also by the voice, when we speak the truth, is uttered: so that he lieth with the heart who approveth a lie; yet that man may possibly not lie with the heart, who uttereth other than is in his mind, in such sort that …
St. Augustine—On Lying

Question Lxxxi of the virtue of Religion
I. Does the Virtue of Religion Direct a Man To God Alone? S. Augustine, sermon, cccxxxiv. 3 " on Psalm lxxvi. 32 sermon, cccxi. 14-15 II. Is Religion a Virtue? III. Is Religion One Virtue? IV. Is Religion a Special Virtue Distinct From Others? V. Is Religion One of the Theological Virtues? VI. Is Religion To Be Preferred To the Other Moral Virtues? VII. Has Religion, Or Latria, Any External Acts? S. Augustine, of Care for the Dead, V. VIII. Is Religion the Same As Sanctity? Cardinal Cajetan, …
St. Thomas Aquinas—On Prayer and The Contemplative Life

Rules to be Observed in Singing of Psalms.
1. Beware of singing divine psalms for an ordinary recreation, as do men of impure spirits, who sing holy psalms intermingled with profane ballads: They are God's word: take them not in thy mouth in vain. 2. Remember to sing David's psalms with David's spirit (Matt. xxii. 43.) 3. Practise St. Paul's rule--"I will sing with the spirit, but I will sing with the understanding also." (1 Cor. xiv. 15.) 4. As you sing uncover your heads (1 Cor. xi. 4), and behave yourselves in comely reverence as in the …
Lewis Bayly—The Practice of Piety