World to Come

Concise Bible Dictionary:

The word translated “world” in the following passages is αἰών (see WORLD): it may therefore be rendered “the age to come.” The Lord declared that the blasphemy against the Holy Ghost of attributing His miracles to the power of Satan, should not be forgiven in the present age, nor in the age to come (Matt. 12:3232And whosoever speaketh a word against the Son of man, it shall be forgiven him: but whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come. (Matthew 12:32)). He also promised that those who gave up property or earthly relations for the sake of the kingdom of God, should, beside present blessing, have eternal life in the age to come (Mark 10:3030But he shall receive an hundredfold now in this time, houses, and brethren, and sisters, and mothers, and children, and lands, with persecutions; and in the world to come eternal life. (Mark 10:30); Luke 18:3030Who shall not receive manifold more in this present time, and in the world to come life everlasting. (Luke 18:30)). Christ has been exalted above every name named in this world or in the world to come (Eph. 1:2121Far above all principality, and power, and might, and dominion, and every name that is named, not only in this world, but also in that which is to come: (Ephesians 1:21)). In Hebrews 6:55And have tasted the good word of God, and the powers of the world to come, (Hebrews 6:5) Paul speaks of some who had tasted of the powers of the age to come, doubtless alluding to miracles.
The word in Hebrews 2:55For unto the angels hath he not put in subjection the world to come, whereof we speak. (Hebrews 2:5) is οἰκουμένη, “habitable earth.” The habitable earth to come is not put in subjection to angels, but to the Son of Man.
The “present age” was well understood by the Jews to be in contrast to that age which should be introduced by the Messiah. Saints in Old Testament times looked forward to this, as for example Abraham (John 8:5656Your father Abraham rejoiced to see my day: and he saw it, and was glad. (John 8:56); Rom. 4:1313For the promise, that he should be the heir of the world, was not to Abraham, or to his seed, through the law, but through the righteousness of faith. (Romans 4:13); Heb. 11:1010For he looked for a city which hath foundations, whose builder and maker is God. (Hebrews 11:10)). Christians are able by faith to enjoy even now the blessings of that coming age, when the Lord with universal sway will establish His kingdom on earth, and have everything under His administration (Compare Rom. 14:1717For the kingdom of God is not meat and drink; but righteousness, and peace, and joy in the Holy Ghost. (Romans 14:17)). Every moral question will be settled then. The world to come will usher in eternity (1. Cor. 15:24,28).

From Anstey’s Doctrinal Definitions:

There are at least ten different expressions that refer to the time when Christ will have His day of glory and power in this world:
•  The World to Come (Matt. 12:3232And whosoever speaketh a word against the Son of man, it shall be forgiven him: but whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come. (Matthew 12:32); Mark 10:3030But he shall receive an hundredfold now in this time, houses, and brethren, and sisters, and mothers, and children, and lands, with persecutions; and in the world to come eternal life. (Mark 10:30); Eph. 1:2121Far above all principality, and power, and might, and dominion, and every name that is named, not only in this world, but also in that which is to come: (Ephesians 1:21); Heb. 6:55And have tasted the good word of God, and the powers of the world to come, (Hebrews 6:5)).
•  The Kingdom of the Heavens (Matt. 4:17; 6:10; 7:21; 8:11; 10:717From that time Jesus began to preach, and to say, Repent: for the kingdom of heaven is at hand. (Matthew 4:17)
10Thy kingdom come. Thy will be done in earth, as it is in heaven. (Matthew 6:10)
21Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven. (Matthew 7:21)
11And I say unto you, That many shall come from the east and west, and shall sit down with Abraham, and Isaac, and Jacob, in the kingdom of heaven. (Matthew 8:11)
7And as ye go, preach, saying, The kingdom of heaven is at hand. (Matthew 10:7)).
•  The Millennium (Rev. 20:66Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years. (Revelation 20:6) – in the Latin Vulgate version).
•  The Times of Refreshing (Acts 3:1919Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord; (Acts 3:19)).
•  The Restitution of All Things (Acts 3:2121Whom the heaven must receive until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began. (Acts 3:21)).
•  The Regeneration (Matt. 19:2828And Jesus said unto them, Verily I say unto you, That ye which have followed me, in the regeneration when the Son of man shall sit in the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel. (Matthew 19:28)).
•  The Reformation (Heb. 9:1010Which stood only in meats and drinks, and divers washings, and carnal ordinances, imposed on them until the time of reformation. (Hebrews 9:10)).
•  The Dispensation of the Fulness of Times (Eph. 1:1010That in the dispensation of the fulness of times he might gather together in one all things in Christ, both which are in heaven, and which are on earth; even in him: (Ephesians 1:10)).
•  The Day of the Lord (1 Thess. 5:22For yourselves know perfectly that the day of the Lord so cometh as a thief in the night. (1 Thessalonians 5:2); 2 Thess. 2:22That ye be not soon shaken in mind, or be troubled, neither by spirit, nor by word, nor by letter as from us, as that the day of Christ is at hand. (2 Thessalonians 2:2)).
•  The Day of Christ (1 Cor. 1:8; 3:13; 5:58Who shall also confirm you unto the end, that ye may be blameless in the day of our Lord Jesus Christ. (1 Corinthians 1:8)
13Every man's work shall be made manifest: for the day shall declare it, because it shall be revealed by fire; and the fire shall try every man's work of what sort it is. (1 Corinthians 3:13)
5To deliver such an one unto Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus. (1 Corinthians 5:5); 2 Cor. 1:1414As also ye have acknowledged us in part, that we are your rejoicing, even as ye also are ours in the day of the Lord Jesus. (2 Corinthians 1:14); Phil. 1:6, 10; 2:166Being confident of this very thing, that he which hath begun a good work in you will perform it until the day of Jesus Christ: (Philippians 1:6)
10That ye may approve things that are excellent; that ye may be sincere and without offence till the day of Christ; (Philippians 1:10)
16Holding forth the word of life; that I may rejoice in the day of Christ, that I have not run in vain, neither labored in vain. (Philippians 2:16)).