2 Thessalonians 2:15

"So then, brethren, stand fast, and hold the traditions which ye were taught, whether by word, or by Epistle of ours." Hence it is manifest, that they did not deliver all things by Epistle, but many things also unwritten, and in like manner both the one and the other are worthy of credit. Therefore let us think the tradition of the Church also worthy of credit. It is a tradition, seek no farther. Here he shows that there were many who were shaken.

In learning and professing the faith, embrace and guard that only which is now delivered to you by the church and confirmed by all the Scriptures. For since not everyone has the education and the leisure required to read and know the Scriptures, to prevent the soul perishing from ignorance, we sum up the whole doctrine of the faith in a few lines.… For the present, just listen and memorize the creed as I recite it, and you will receive in due course the testimony from Scripture of each of its propositions. For the articles of faith have not been composed to please human desire, but the most important points collected from the Scriptures make up one complete teaching of the faith. And just as the mustard seed in a small grain contains in embryo many future branches, so also the creed embraces in a few words all the religious knowledge in both the Old and New Testament. Pay attention, therefore, brothers, and cling to the teachings which are now delivered to you, and "write them on the tablet of your heart."

In answer to the objection that the doxology in the form "with the Spirit" has no written authority, we maintain that if there is no other instance of that which is unwritten, then this must not be received. But if the greater number of our mysteries are admitted into our constitution without written authority, then, in company with the many others, let us receive this one. For I hold it apostolic to abide also by the unwritten traditions. "I praise you," it is said, "that ye remember me in all things, and keep the ordinances as I delivered them to you;" and "Hold fast the traditions which ye have been taught whether by word, or our Epistle." One of these traditions is the practice which is now before us, which they who ordained from the beginning, rooted firmly in the churches, delivering it to their successors, and its use through long custom advances pace by pace with time.

who has loved us So much so that He gave us His only Son.

and who has given us an everlasting consolation For He is their Fater, He consoles them, and they cannot be his sons without consolation. And because there is consolation in prosperous lands, Paul adds "eternal" so that he might separate earthly consolation from that which …

Then when he says, "therefore, brethren", he admonishes them to hold fast the truth. And first he sets out his admonition; second, a prayer, at "now may our Lord Jesus Christ himself." And he does the first because our works depend on free will; but …

From this it is clear that the apostles transmitted much without letters as well, through the word, that is, by living speech, and not only through epistles. Meanwhile, both the one and the other are equally trustworthy. Therefore we must also recognize Church Tradition as …

Therefore, brethren, stand fast,....

Therefore - In view of the fact that you are thus chosen from eternity, and that you are to be raised up to such honor and glory. Stand fast - Amidst all the temptations which surround you; compare the notes on Eph 6:10-14. And hold the traditions which ye have been taught On the word “traditions,” see the notes on Mat 15:2. It means properly things delivered over from one to another; then anything orally delivered - any precept, doctrine, or law.

Therefore, brethren, stand fast - Their obtaining eternal glory depended on their faithfulness to the grace of God; for this calling did not necessarily and irresistibly lead to faith; nor their faith to the sanctification of the spirit; nor their sanctification of the spirit to the glory of our Lord Jesus. Had they not attended to the calling, they could not have believed; had they not believed, they could not have been sanctified; had they not been sanctified they could not have been glorified. All these things depended on each other; they were stages of the great journey; and at any of these stages they might have halted, and never finished their Christian race. Hold the traditions which ye have been taught - The word παραδοσις, which we render tradition, signifies any thing delivered in the way of teaching; and here most obviously means the doctrines delivered by the apostle to the Thessalonians; whether in his preaching, private conversation, or by these epistles; and particularly the first epistle, as the apostle here states. Whatever these traditions were, as to their matter, they were a revelation from God; for they came by men who spake and acted under the inspiration of the Holy Spirit; and on this ground the passage here can never with any propriety be brought to support the unapostolical and anti-apostolical traditions of the Romish Church; those being matters which are, confessedly, not taken from either Testament, nor were spoken either by a prophet or an apostle.