work out our salvation with fear and trembling, because it is God that worketh in us to will and perform, (Philippians 2:12, 13.) For, on the one hand, having humbled us, he entreats us to seek supplies elsewhere; and, on the other hand, lest anxiety should induce sloth, he exhorts us to strenuous exertions. And, therefore, whenever any temptation is presented to us, let us first remember our weakness, that, being entirely thrown down, we may learn to seek elsewhere what we need; and, next, let us remember the grace which is promised, that it may free us from doubt. For those who, forgetting their weakness, and not calling on God, feel assured that they are strong, act entirely like drunken soldiers, who throw themselves rashly into the field, but, as soon as the effects of strong drink are worn off, think of nothing else than flight. It is wonderful that the other disciples, after Peter had been reproved, still break out into the same rashness; and hence it is evident how little they knew themselves. We are taught by this example, that we ought to attempt nothing, except so far as God stretches out his hand; for nothing is more fading or transitory than inconsiderate zeal. The disciples perceive that nothing is more base or unreasonable than to forsake their Master; and, therefore, they justly detest so infamous an action: but, having no reliance on the promise, and neglecting prayer, they advance with inconsiderate haste to boast of a constancy which they did not possess.

Simon - Peter. Jesus, foreseeing the danger of Peter, and knowing that he was about to deny him, took occasion to forewarn him and put him on his guard, and also to furnish him with a solace when he should be brought to repentance.
Satan hath desired - Satan is the prince of evil. One of his works is to try the faith of believers to place temptations and trials in their way, that they may be tested. Thus God gave Job into his hands, that it might be seen whether he would be found faithful, or would apostatize. See the notes at Job 1:7-12. So Satan desired to have Peter in his hands, that he might also try him.
May sift you as wheat - Grain was agitated or shaken in a kind of fan or sieve. The grain remained in the fan, and the chaff and dust were thrown off. So Christ says that Satan desired to try Peter; to place trials and temptations before him; "to agitate him" to see whether anything of faith would remain, or whether all would not be found to be chaff - mere natural ordor and false professions.

Simon, Simon - When a name is thus repeated in the sacred writings, it appears to be always intended as an expression of love, manifested by a warning voice. As if he had said, While thou and the others are contending for supremacy, Satan is endeavoring to destroy you all: but I have prayed for thee, as being in most danger.
Satan hath desired - you - That is, all the apostles, but particularly the three contenders: the plural pronoun, ὑμας, sufficiently proves that these words were not addressed to Peter alone. Satan had already got one, Judas; he had nearly got another, Peter; and he wished to have all. But we see by this that the devil cannot even tempt a man unless he receive permission. He desires to do all evil; he is permitted only to do some.

(10) And the Lord said, Simon, Simon, behold, Satan hath desired [to have] you, that he may (l) sift [you] as wheat:
(10) We must always think about the ambush that Satan lays for us.
(l) To toss you and scatter you, and also to cast you out.

And the Lord said, Simon, Simon,.... Peter is particularly, and by name, spoken to, either because he might be a principal person in the debate and contention about superiority, mentioned in the context; or because he was chiefly to suffer in the following temptation of Satan; or because he was generally the mouth of the rest of the apostles; and he is addressed, not by the name of Peter, the name Christ gave him, when he first called him, signifying his future solidity, firmness, and steadfastness; because in this instance, he would not give any proof of it; but by his former name, Simon, and which is repeated, partly to show the earnestness of Christ in the delivery of what follows, and partly to express his affectionate concern for him; so the Jews observe (s) concerning God's calling, "Moses, Moses", Exodus 3:4 that , "the doubling of the word", is expressive "of love", and finding grace and favour; even as it is said, "Abraham, Abraham", Genesis 22:11 or it may be to excite attention to what Christ was about to say. Though the Syriac, Persic, and Ethiopic versions read the first of these, "to Simon", thus: Jesus said to Simon,
Simon, behold Satan hath desired to have you; not only Peter, but all the apostles; for the word "you", is plural: Satan, the enemy of the woman's seed, the accuser of the brethren, the wicked one, and the tempter, desired, asked leave of God, for he can do nothing without permission; that he might have these disciples under his power, and in his hand; just as he got leave to have the goods, and even the body of Job in his hand, and fain would have had his life, and soul too, could he have obtained it; and he would have the lives and souls of others; for he goes about, seeking to devour whom he may; and he had now an evil eye upon the apostles, and wanted an opportunity to gratify his malice and envy: his end in desiring to have them in his power was,
that he may sift you as wheat; not to separate the chaff from the wheat, but to make them look like all chaff, by covering the wheat of grace with the chaff of sin and corruption; or to destroy the wheat, was it possible; or to toss them to and fro as wheat is in a sieve; that is, to afflict and distress them; see Amos 9:9 by scattering them both from Christ, and one another; by filling them with doubts about Jesus being the Messiah and Redeemer: and by frightening them with the fears of enemies and of death, which end he obtained; see Matthew 26:56.
(s) Tzeror Hammor, fol. 38. 4. Jarchi in Genesis. xxii. 11. Bemidbar Rabba, sect. 14. fol. 217. 1.

Simon, Simon--(See on Luke 10:41).
desired to have--rather, "hath obtained you," properly "asked and obtained"; alluding to Job (Job 1:6-12; Job 2:1-6), whom he solicited and obtained that he might sift him as wheat, insinuating as "the accuser of the brethren" (Revelation 12:10), that he would find chaff enough in his religion, if indeed there was any wheat at all.
you--not Peter only, but them all.

Simon, Simon. For the warning to Peter of his Denial of the Lord, see Matthew 26:31-35. Compare Mark 14:27-31.

Satan hath desired to have you - My apostles, that he might sift you as wheat - Try you to the uttermost.