From the Orthodox Study Bible
Romans 9:14-18At Mt. Sinai, some of the idolatrous Jews perished while others survived (Ex 32; 33), though God does not explain why He made this distinction. Likewise, Pharaoh opposed God, and thus God used his arrogance to accomplish the divine will. The actions of God’s will are neither capricious nor vindictive, but are based in divine mercy and compassion. Even though mankind does not understand the basis of God’s decisions (see Is 55:8, 9), we trust His grace and righteousness, upon which our salvation rests.
Romans 9:19-21Man can have no complaint against God’s sovereignty any more than clay can question the potter about how he fashions it. When we recognize our standing before God, the objections vanish (see Job 38:1–42:6). It is not only impossible to answer questions of this kind (vv. 22–24), but it is presumptuous to raise them (JohnChr).
Romans 9:22-24After first instructing his hearers how presumptuous it is to question God’s sovereign will (vv. 19–21), Paul nevertheless gives an answer. The proof that God’s judgment is based in mercy is shown by how long He endured with much longsuffering those who were in rebellion against Him. In other words, God gave his enemies every benefit and every opportunity to repent, though they deserved none. In this way, His wrath is justified and the glory He grants believers is complete. Vessels of wrath are unbelieving Jews and rebellious foreign nations (see vv. 14–17). The vessels of mercy are believing Jews and Gentiles.
Romans 9:25-29The OT prophets had foreseen God’s sovereignty and man’s salvation in several ways: (1) He makes the outcasts (Gentiles) to be His people and sons (vv. 25, 26); (2) He saves only a remnant of the Jews (vv. 27, 28); and (3) He forbears to utterly destroy the unbelieving Jews on account of the faithful remnant (v. 29).
Romans 9:30-33The first answer to the question of Jewish unbelief was from God’s standpoint: His sovereign will (vv. 6–29). Here, Paul gives the second part of the answer, which is man’s free response: faith. The Gentiles who had been unconcerned with righteousness now attain it through faith in Christ. God mercifully overlooks their former unrighteousness because it was practiced in ignorance (Acts 17:30). By contrast, the Jews fail to attain even the righteousness of the law, for they do not pursue the law by faith but by works (v. 32). Because they only saw the letter of the law, they missed both its spirit and its profession of Christ, the Lawgiver, who was to come. Because they saw the letter of the law as being greater than its fulfillment, Christ becomes their stumbling stone (v. 32).
Luke 6:1-5Second Sabbath after the first: This term was used when a Jewish feast immediately followed the normal Sabbath, for a feast was also known as a Sabbath. According to St. Ambrose, the term “second Sabbath” serves as an image of the new covenant and the eternal resurrection: the first Sabbath indicates the Law, while the second Sabbath indicates the gospel that follows it. Under the new covenant, the food which was at one time not lawful for anyone but the priests to eat is now freely given to all by the Lord of the Sabbath (v. 5). David prefigured this when he gave the showbread . . . to those with him (vv. 3, 4).
Luke 6:7According to certain traditions that the scribes and Pharisees had built up around the Law, healing was considered work, and thus was not permissible on the Sabbath. They believed they served God by zealously keeping these peripheral traditions, but this legalism made them insensitive to God’s mercy.