Wherefore we receiving a kingdom which cannot be moved - We who are Christians. We pertain to a kingdom that is permanent and unchanging. The meaning is, that the kingdom of the Redeemer is never to pass away. It is not like the Jewish dispensation, to give place to another, nor is there any power that can destroy it; see the notes on Matthew 16:18. It has now endured for eighteen hundred years, amidst all the revolutions on earth, and in spite of all the attempts which have been made to destroy it; and it is now as vigorous and stable as it ever was. The past has shown that there is no power of earth or hell that can destroy it, and that in the midst of all revolutions this kingdom still survives. Its great principles and laws will endure on earth to the end of time, and will be made permanent in heaven. This is the only kingdom in which we can be certain that there will be no revolution; the only empire which is destined never to fall.
Let us have grace, whereby we may serve God - Margin, "let us hold fast." The Greek is, literally, let us have grace; the meaning is, "let us hold fast the grace or favor which we have received in being admitted to the privileges of that kingdom." The object of the apostle is, to keep them in the reverent fear and service of God. The "argument" which he presents is, that this kingdom is permanent. There is no danger of its being overthrown. It is to continue on earth to the end of time; it is to be established in heaven forever. If it were temporary, changeable, liable to be overthrown at any moment, there would be much less encouragement to perseverance. But in a kingdom like this there is every encouragement, for there is the assurance:
(1) that all our interests there are safe;
(2) that all our exertions will be crowned with ultimate success,
(3) that the efforts which we make to do good will have a permanent influence on mankind, and will bless future ages; and
(4) that the reward is certain.
A man subject to a government about whose continuance there would be the utmost uncertainty, would have little encouragement to labor with a view to any permanent interest. In a government where nothing is settled; where all policy is changing, and where there are constantly vacillating plans, there is no inducement to enter on any enterprise demanding time and risk. But where the policy is settled; where the principles and the laws are firm; where there is evidence of permanency, there is the highest encouragement. The highest possible encouragement of this kind is in the permanent and established kingdom of God. All other governments may be revolutionized; this never will be - all others may have a changeful policy; this has none - all others will be overthrown; this never will.
With reverence and godly fear - With true veneration for God, and with pious devotedness.

We receiving a kingdom - The Gospel dispensation, frequently termed the kingdom of God and the kingdom of heaven, because in it God reigns among men, and he reigns in the hearts of them that believe, and his kingdom is righteousness, peace, and joy in the Holy Ghost.
Which cannot be moved - Which never can fail, because it is the last dispensation.
Let us have grace - Εχωμεν χαριν· Let us have, keep, or hold fast, the benefit or gift, that is, the heavenly kingdom which God has given us. This is the meaning of the word, 2-Corinthians 8:4, and is so rendered by our translators; and it is only by this heavenly gift of the Gospel that we can serve God acceptably, for he can be pleased with no service that is not performed according to the Gospel of his Son.
If we prefer the common meaning of the word grace it comes to the same thing; without the grace - the especial succor and influence of Christ, we cannot serve, λατρευωμεν, pay religious worship to God; for he receives no burnt-offering that is not kindled by fire from his own altar.
Acceptably - Ευαρεστως· In such a way as to please him well. And the offering, with which he is well pleased, he will graciously accept; and if he accept our service, his Spirit will testify in our conscience that our ways please him. When Abel sacrifices, God is well pleased; where Cain offers, there is no approbation.
Reverence - Αιδους· With shamefacedness or modesty.
Godly fear - Ευλαβειας· Religious fear. We have boldness to enter into the holiest by the blood of Jesus, but let that boldness be ever tempered with modesty and religious fear; for we should never forget that we have sinned, and that God is a consuming fire. Instead of αιδους και ευλαβειας, modesty and religious fear, ACD*, several others, with the Slavonic and Chrysostom, have ευλαβειας και δεους, and others have φοβου και τρομου, fear and trembling; but the sense is nearly the same.

(15) Wherefore we receiving a kingdom which cannot be moved, let us have grace, whereby we may serve God acceptably with (m) reverence and godly (n) fear:
(15) A general exhortation to live reverently and religiously under the most happy subjection of so mighty a King, who as he blesses his most mightily, so does he most severely revenge the rebellious. This is the sum of a Christian life, respecting the first table of the law.
(m) By reverence is meant that honest modesty which keeps them in their duties.
(n) Religious and godly fear.

Wherefore we receiving a kingdom which cannot be moved,.... Not the kingdom of glory; eternal glory is a kingdom, and it is an immovable one; and is a free gift of God, and may be said to be now received; God's people are called unto it, and are made meet for it, and have a right unto it, and have it in faith and hope, and in Christ their head and representative: but the kingdom of grace, under the Gospel dispensation, is meant: there are several things in this dispensation which are called a kingdom; as a Gospel church, the Gospel itself, and the privileges and blessings of grace bestowed, especially spiritual and internal ones, Matthew 25:1 and the whole dispensation is called the kingdom of heaven, Matthew 3:2. Christ he is King, believers are his subjects, the Gospel is his sceptre, and the ordinances are his laws and appointments, and all are immovable; and a man may be said to receive this kingdom, when he is delivered from the power of darkness, is regenerated, and has the blessings of grace actually bestowed on him, and is brought to Zion:
let us have grace; by which is meant, not thankfulness for so great a blessing, though this is highly requisite and necessary; nor the favour of God, though, as the reception of the kingdom springs from hence, a sense of it ought to abide; nor the habit or principle of grace in the heart, unless particularly the grace of faith, and the exercise of it, should be designed; but rather the doctrine of grace, the Gospel, is intended; and the sense is, "let us hold it", as the Ethiopic version renders it; let us hold the Gospel fast, and a profession of it: the Vulgate Latin and Arabic versions read, "we have grace"; this goes along with the immovable kingdom; all that have truly received the one, have the other:
whereby we may serve God; God is to be served, and not a creature, nor the elements of this world, the ceremonial law, and its rites: nor is he to be served in any form, only in a spiritual way; and without holding to the Gospel, there is no serving him in an evangelic manner; the true and right way of serving him is as follows:
acceptably; in Christ, in the Gospel of his Son, and by faith in him, without which it is impossible to please God:
with reverence; of the majesty of God, with shame for sin, and with a sense of unworthiness:
and godly fear; which has God for its author and object, and which springs from his grace, and is increased by discoveries of his goodness; and which is consistent with faith, and spiritual joy; see Psalm 2:11.

receiving--as we do, in prospect and sure hope, also in the possession of the Spirit the first-fruits. This is our privilege as Christians.
let us have grace--"let us have thankfulness" [ALFORD after CHRYSOSTOM]. But (1) this translation is according to classical Greek, not Paul's phraseology for "to be thankful." (2) "To God" would have been in that case added. (3) "Whereby we may serve God," suits the English Version "grace" (that is Gospel grace, the work of the Spirit, producing faith exhibited in serving God), but does not suit "thankfulness."
acceptably--Greek, "well-pleasingly."
reverence and godly fear--The oldest manuscripts read, "reverent caution and fear." Reverent caution (same Greek as in Hebrews 5:7; see on Hebrews 5:7) lest we should offend God, who is of purer eyes than to behold iniquity. Fear lest we should bring destruction on ourselves.

Therefore let us, receiving - By willing and joyful faith. A kingdom - More glorious than the present heaven and earth. Hold fast the grace, whereby we may serve God - In every thought, word, and work. With reverence - Literally, with shame. Arising from a deep consciousness of our own unworthiness. And godly fear - A tender, jealous fear of offending, arising from a sense of the gracious majesty of God.