2-timothy 2:19

The foundation of God standeth sure - The word θεμελιος signifies literally a foundation, and especially the foundation of a building; and metaphorically, the building itself, and often a noble mansion or palace. In this place the apostle compares the religion of Christ to a great or noble mansion. See 2 Timothy 2:20. And as this religion is founded on the authority and power of the Almighty, it necessarily must stand sure and be permanent. This house has an inscription on it, for so σφραγις, seal, is frequently understood; and this is evidently an allusion to the ancient temples. Above the door of the temple of Delphi there was the Greek word ει thou art, on which Plutarch has written an express treatise. In many of the Mohammedan mosques the walls are covered with inscriptions, which are ordinarily sentences taken from the Koran, relative to the majesty of God, or the nature of his worship. And we know that there was an inscription on the mitre of the high priest among the Jews, viz.: קדש ליהוה kodesh laihovah, "Holiness to the Lord;" Exodus 28:36; Exodus 39:30. See also Zechariah 14:20. And this inscription may here be represented as being made with the seal of God, for he stamps this on all things belonging to himself and his worship.

But some suppose θεμελιος here to signify a contract or covenant by which two parties are bound to fulfill certain conditions and duties, the obligation to which, each takes on him by sealing the instrument with his seal. Among the Asiatics, these seals have scarcely ever any image or figure on them, but always some very expressive inscription. I have seen many of these, and several of them are now before me. The twofold inscription, i.e. one on the seal of each party, may be here alluded to; that on God's seal is, Εγνω Κυριος τους οντας αὑτου· The Lord approveth of them that are his. That on the seal of his followers is, Αποστητω απο αδικιας πας ὁ ονομαζων το ονομα Κυριου. Let every one who nameth the name of the Lord (every Christian) depart from iniquity. Thus each has his peculiar inscription.

Κυριου, Lord, instead of Χριστου, Christ, is the reading of almost all the MSS. of importance, and the principal versions.

The Lord knoweth - i.e. Approves, watches over, and provides for, them that are his true followers. To this his followers most cheerfully subscribe, and say: Let every one that nameth this Lord avoid every appearance of evil.

Nevertheless the foundation of God is sure - Margin, "steady." The meaning is, that though some had been turned away by the arts of these errorists, yet the foundation of the church which God had laid remained firm; compare Ephesians 2:20, "And are built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief cornerstone." As long as this foundation remained firm, there was no reason to be troubled from the few instances of apostasy which had occurred; compare Psalm 11:3. It is not uncommon to compare the church to a building erected on a solid foundation; Ephesians 2:20-21; 1 Corinthians 3:9-10; Matthew 16:18.

Having this seal - Or rather a seal with this inscription. The word "seal" is sometimes used to denote the instrument by which an impression is made, and sometimes the impression or inscription itself. A seal is used for security Matthew 27:66, or as a mark of genuineness; Revelation 9:4. The seal here is one that was affixed to the foundation, and seems to refer to some inscription on the foundation-stone which always remained there, and which denoted the character and design of the edifice. The allusion is to the custom, in rearing an edifice, of inscribing the name of the builder and the design of the edifice on the cornerstone. See Rosenmuller, Alte undneue Morgenland, No. 405. So the church of Christ is a building reared by the hands of God. Its foundation has been firmly and securely laid, and on that foundation there is an inscription always remaining which determines the character of the edifice.

The Lord knoweth them that are his - This is one of the inscriptions on the foundation-stone of the church, which seems to mark the character of the building. It always stands there, no matter who apostatizes. It is at the same time a fearful inscription - showing that no one can deceive God; that he is intimately acquainted with all who enter that building; and that in the multitudes which enter there, the friends and the foes of God are intimately known. He can separate his own friends from all others, and his constant care will be extended to all who are truly his own, to keep them from falling. This has the appearance of being a quotation, but no such passage is found in the Old Testament in so many words. In Nahum 1:7, the following words are found: "And he knoweth them that trust in him;" and it is possible that Paul may have had that in his eye; but it is not necessary to suppose that he designed it as a quotation. A phrase somewhat similar to this is found in 1 Num 16:5, "the Lord will show who are his," rendered in the Septuagint, "God knoweth who are his;" and Whitby supposes that this is the passage referred to. But whether Paul had these passages in view or not, it is clear that he meant to say that it was one of the fundamental things in religion, that God knew who were his own people, and that he would preserve them from the danger of making shipwreck of their faith.

And, Let every one that nameth the name of Christ depart from iniquity - This is the other seal or inscription which is made on the foundation which God has laid. The foundation has two inscriptions - the first implying that God knows all who are his own people; the other, that all who are his professed people should depart from evil. This is not found in so many words in the Old Testament, and, like the former, it is not to be regarded as a quotation. The meaning is, that it is an elementary principle in the true church, that all who become members of it should lead holy lives. It was also true that they would lead holy lives, and amidst all the defections of errorists, and all their attempts to draw away others from the true faith, those might be known to be the true people of God who did avoid evil.

2:19 But the foundation of God - His truth and faithfulness.Standeth fast - Can never be overthrown; being as it were sealed with a seal, which has an inscription on each side: on the one, The Lord knoweth those that are his; on the other, Let every one who nameth the name of the Lord, as his Lord, depart from iniquity. Indeed, they only are his who depart from iniquity.To all others he will say, "I know you not." 7:22 ,23