John Chrysostom : In another place he says the same, "for the things which are seen are temporal, but the things which are not seen are eternal" (2 Cor. iv. 18); and from this makes an exhortation with regard to the evils which we endure in this present life; and here he does this, and says, let us continue steadfast; "let us have thankfulness," i.e., let us give thanks unto God. For not only we ought not to be discouraged at present things, but even to show the greatest gratitude to Him, for those to come. "Whereby we serve God acceptably," that is to say, "for thus is it possible to serve God acceptably," by giving him thanks in all things. "Do all things" (he says) "without murmurings and disputings." (Phil. ii. 14.) For whatever work a man does with murmuring, he cuts away and loses his reward; as the Israelites - how great a penalty they paid for their murmurings. Wherefore he says, "Neither murmur ye." (1 Cor. x. 10.) It is not therefore possible to "serve" Him "acceptably" without a sense of gratitude to Him for all things, both for our trials, and the alleviations of them. That is, let us utter nothing hasty, nothing disrespectful, but let us humble ourselves that we may be reverential. For this is "with reverence and godly fear." — Homily on Hebrews 33 John Chrysostom : "Wherefore we receiving a kingdom which cannot be moved, let us have grace whereby we serve God acceptably with reverence and godly fear." Let us then do all for this, that we may attain that rest, that we may enjoy those good things. Yea, I pray and beseech you, let us be earnest for this. No one builds in a city which is going to fall down. Tell me, I pray you, if any one said that after a year, this city would fall, but such a city not at all, wouldest thou have built in that which was about to fall? So I also now say this, Let us not build in this world; it will fall after a little, and all will be destroyed. But why do I say, It will fall? Before its fall we shall be destroyed, and suffer what is fearful; we shall be removed from them. Why build we upon the sand? Let us build upon the rock: for whatsoever may happen, that building remains impregnable, nothing will be able to destroy it. With good reason. For to all such attacks that region is inaccessible, just as this is accessible. For earthquakes, and fires, and inroad of enemies, take it away from us even while we are alive: and oftentimes destroy us with it. — Homily on Hebrews 32 Oecumenius : "Therefore, receiving a kingdom that cannot be shaken." If creation is unshakable, much more the kingdom of heaven, which you are about to receive as a reward for the sufferings here for Christ. Since the sufferings are the cause of the kingdom, let us give thanks to God for them. "by which we may serve." For which, with thanksgiving;for it is by giving thanks to God even for tribulations and temptations that one serves Him acceptably. "with reverence and godly fear." And it is not enough, Paul says, to be merely grateful, unless there is also shame, both towards all and towards God, accompanying piety. — The Pseudo-Oecumenian Catena on Hebrews Oecumenius : "For our God is a consuming fire." By saying this, Paul either wishes to frighten them not to be ungrateful, nor to complain about their tribulations, lest they suffer the wrath and punishment of God; or to comfort them; as if he were saying: let us give thanks in our tribulations; for we have a Master who is able to consume our adversaries. — The Pseudo-Oecumenian Catena on Hebrews Theodore of Mopsuestia : The apostle did not think it possible to describe God's judgment sufficiently in any other way than through an analogy from our experience, and for this reason he did not hesitate to call God "fire." — COMMENTARY ON John 1.1.1