The repetition of the one exhortation, 'Be strong, be strong, be strong,' is very impressive. The very monotony has power. In the face of the difficulties which beset every good work the cardinal virtue is strength. 'To be weak is to be miserable,' and is the parent of failures. One hears in the exhortation an echo of that to Joshua, to whom and to his people the command 'Be strong and of good courage' was given with like repetition (Joshua i.).
But there is nothing more futile than telling feeble men to be strong, and trembling ones to be very courageous. Unless the exhorter can give some means of strength and some reason for courage, his word is idle wind. So Haggai bases his exhortation upon its sufficient ground, 'For I am with you, saith Jehovah of hosts.' Strength is a duty, but only if we have a source of strength available. The one basis of it is the presence of God. His name reveals the immensity of His power, who commands all the armies of heaven, angels, or stars, and to whom the forces of the universe are as the ordered ranks of His disciplined army; and who is, moreover, the Captain of earthly hosts, ever giving victory to those who are His 'willing soldiers in the day of His power.' It is not vain to bid a man be strong, if you can assure him that God is with him. Unless you can, you may save your breath.
Here is the temper for all Christian workers. Let them realise the duty of strength; let them have recourse to the Fountain of strength; let them mark the purpose of strength, which is 'work,' as Haggai puts it so emphatically. We have nothing to do with the magnitude of what we may be able to build. It may be very poor beside the great houses that greater ages or men have been able to rear. But whether it be a temple brave with gold and cedar, or a log, it is our business to put all our strength into the task, and to draw that strength from the assurance that God is with us.
The difficulties connected with the translation of verse 5 need not concern us here. For my purpose, the general sense resulting from any translation is clear enough. The covenant made of old, when Israel came from an earlier captivity, is fresh as ever, and God's Spirit is with the people; therefore they need not fear. 'Fear ye not' is another of the well-meant exhortations which often produce the opposite effect from the intended one. One can fancy some of the people saying, 'It is all very well to talk about not being afraid; but look at our feebleness, our defencelessness, our enemies; we cannot but fear, if we open our eyes.' Quite true; and there is only one antidote to fear, and that is the assurance that God's covenant binds Him to take care of me. Unless one believes that, he must be strangely blind to the facts of life if he has not a cold dread coiled round his heart and ever ready to sting.
The Prophet rises into grand predictions of the glory of the poor house which the weak hands were raising. Verses 6-9 set things invisible over against the visible. In general terms the Prophet announces a speedy convulsion, partly symbolical and partly real, in which 'all nations' shall be revolutionised, and as a consequence, shall become Jehovah's worshippers, bringing their treasures to the Temple, and so filling the house with glory. This shall be because Jehovah is the true Possessor of all their wealth. But the scope of verse 9 seems to transcend these promises, and to point to an undescribed 'glory,' still greater than that of the universal flocking of the nations with their gifts, and to reach a climax in the wide promise of peace given in the Temple, and thence, as is implied, flowing out 'like a river' through a tranquillised world.