For himself - Better, The Lord has done everything for its own end; and this includes the appointment of an "evil day" for "the wicked" who deserve it.

The Lord hath made all things for himself - He has so framed and executed every part of his creation, that it manifests his wisdom, power, goodness, and truth.
Even the wicked for the day of evil - וגם רשע ליום רעה vegam rasha leyom raah. The whole verse is translated by the Chaldee thus: "All the works of the Lord are for those who obey him; and the wicked is reserved for the evil day." As רעה raah literally signifies to feed, it has been conjectured that the clause might be read, yea, even the wicked he feeds by the day, or daily.
If we take the words as they stand in our present version, they mean no more than what is expressed by the Chaldee and Spriac: and as far as we can learn from their present confused state, by the Septuagint and Arabic, that "the wicked are reserved for the day of punishment." Coverdale has given, as he generally does, a good sense: "The Lorde dotll all thinges for his owne sake; yea, and when he kepeth the ungodly for the daye of wrath." He does not make the wicked or ungodly man; but when man has made himself such, even then God bears with him. But if he repent not, when the measure of his iniquity is filled up, he shall fall under the wrath of God his Maker.

The LORD hath made all [things] for himself: yea, even the wicked for the day of (c) evil.
(c) So that the justice of God will appear to his glory, even in the destruction of the wicked.

The Lord hath made all things for himself,.... This is true of the Lord with respect to the creation of all things by him. All things are made by him, the heaven, earth, and sea; and all that are in them, angels, men, beasts, birds, fishes, and all creatures: and these are made for himself, and not another; not for the pure or good men, as Aben Ezra, though all things are for the elect's sake; but for God himself, besides whom there was no other before the creation, nor is there any other God but him, who is the first cause and last end of all things: nor were those all things made for him, through any want he had of them, being God all sufficient and blessed for evermore, but to show his greatness, and communicate his goodness; they are made for his service, which all creatures are obliged unto, and whom all in their way obey, and for his honour and glory. It is also true of his works of providence, and of his ordering and disposing of all things in the course of that, to answer ends of his own glory; his kingdom of providence rules over all; there is a general providence, which respects all creatures and things; and there is a particular providence attending the Lord's own people; and in all the glory of his wisdom, justice, truth, and goodness, is conspicuous: but this is chiefly, if not solely, to be understood of God's decrees and purposes; and of his ordering and appointing all things to bring about his own glory. Every thing is appointed of God; he has foreordained whatever comes to pass; there is a purpose for everything under the heavens, and a time fixed for the execution of it. Junius restrains it to "all men"; but it is true of all creatures and things, though especially men: all things are appointed by the Lord, respecting the temporal estate of men; their birth, and the time of it, with all the circumstances attending it; the place of their abode, their calling, station of life, and usefulness; all adverse and prosperous dispensations; their death, with all the events leading to it: and so likewise all things respecting their spiritual and eternal estate; the choice of them to salvation; their redemption by Christ; the time of his coming, sufferings, and death, and the circumstances thereof; the conversion of God's elect, the time, place, and means; these are all according to the purpose of God; as are also all their times of affliction, temptation, desertion, and of joy and comfort. In a word, the final state of all men, good and bad, is fixed by the Lord; and all this is "for himself", which some render, "to answer to himself" (c); all creatures are made to answer to his original design in making them, to the laws of their creation, and to answer his ends and purposes; and which is ultimately his own glory: or for his praise, as Jarchi; for his will and pleasure, as R. Isaac; for the thing in which he is well pleased, as R. Jonah or for his own sake, as Kimchi; and all which agree, as with the sense of the words, so with Revelation 4:11. The Targum and Syriac version very wrongly render them,
"all the works of God, or the Lord, are for them that obey him;''
yea, even the wicked for the day of evil; this is added to illustrate the general proposition in the preceding clause, and to obviate an objection, that might be taken from the destruction of the wicked, against all things being for the glory of God; for even the destruction of the wicked, which is under a divine appointment, is for his glory. It is not the sense of this text, nor of any other passage of Scripture, that God made man to damn him; nor is this to be inferred from the doctrine of predestination: God made man, neither to damn him, nor to save him, but for his own glory; and that is secured, whether in his salvation or damnation; nor did or does God make men wicked; he made man upright, and he has made himself wicked; and, being so, God may justly appoint him to damnation for his wickedness, in doing which he glorifies his justice. "The day of evil", or "evil day", is the day of wrath and ruin, unto which wicked men are reserved by the appointment of God, agreeably to the Targum, Septuagint, Syriac, and Arabic versions. This is true of wicked angels, wicked men, and particularly of that wicked one, the man of sin and son of perdition, antichrist; the word here used is in the singular number.
(c) "ad responsum suum", Cocceius, Gejerus, Michaells; "ad responsum proprium ejus", Gussetius, p. 623. "ad responsum sui", Schultens.

God makes use of the wicked to execute righteous vengeance on each other; and he will be glorified by their destruction at last.

for himself--"for its answer," or "purpose," that is, according to God's plan; the wicked are for the day of evil (Psalm 49:5; Jeremiah 17:18); sinning and suffering answer to each other, are indissolubly united.

4 Jahve hath made everything for its contemplated end;
And also the wicked for the day of evil.
Everywhere else מענה means answer (Venet. πρὸς ἀπόκρισιν αὐτοῦ), which is not suitable here, especially with the absoluteness of the כּל; the Syr. and Targ. translate, obedientibus ei, which the words do not warrant; but also propter semet ipsum (Jerome, Theodotion, Luther) give to 4b no right parallelism, and, besides, would demand למענו or למענהוּ. The punctuation למּענהוּ, which is an anomaly (cf. כּגּברתּהּ, Isaiah 24:2, and בּערינוּ, Ezra 10:14), shows (Ewald) that here we have, not the prepositional למען, but ל with the subst. מענה, which in derivation and meaning is one with the form מעז abbreviated from it (cf. מעל, מער), similar in meaning to the Arab. ma'anyn, aim, intention, object, and end, and mind, from 'atay, to place opposite to oneself a matter, to make it the object of effort. Hitzig prefers למענה, but why not rather למענהוּ, for the proverb is not intended to express that all that God has made serve a purpose (by which one is reminded of the arguments for the existence of God from final causes, which are often prosecuted too far), but that all is made by God for its purpose, i.e., a purpose premeditated by Him, that the world of things and of events stands under the law of a plan, which has in God its ground and its end, and that also the wickedness of free agents is comprehended in this plan, and made subordinate to it. God has not indeed made the wicked as such, but He has made the being which is capable of wickedness, and which has decided for it, viz., in view of the "day of adversity" (Ecclesiastes 7:14), which God will cause to come upon him, thus making His holiness manifest in the merited punishment, and thus also making wickedness the means of manifesting His glory. It is the same thought which is expressed in Exodus 9:16 with reference to Pharaoh. A praedestinatio ad malum, and that in the supralapsarian sense, cannot be here taught, for this horrible dogma (horribile quidem decretrum, fateor, says Calvin himself) makes God the author of evil, and a ruler according to His sovereign caprice, and thus destroys all pure conceptions of God. What Paul, Romans 9, with reference to Exodus 9:16, wishes to say is this, that it was not Pharaoh's conduct that determined the will of God, but that the will of God is always the antecedens: nothing happens to God through the obstinacy and rebellion of man which determines Him to an action not already embraced in the eternal plan, but also such an one must against his will be subservient to the display of God's glory. The apostle adds Romans 9:22, and shows that he recognised the factor of human self-determination, but also as one comprehended in God's plan. The free actions of men create no situation by which God would be surprised and compelled to something which was not originally intended by Himself. That is what the above proverb says: the wicked also has his place in God's order of the world. Whoever frustrates the designs of grace must serve God in this, ἐνδείζασθαι τὴν ὀργὴν καὶ γνωρίσαι τὸ δυνατὸν αὐτοῦ (Romans 9:22).

Doth work - He orders or disposes. For - For his own glory; for the discovery of his wisdom, power, goodness, truth, justice. The wicked - Wilful and impenitent sinners. Men make themselves wicked, and God therefore makes them miserable.