1 Peter 1:20

For Christ was previously known [by God, even] before the world was created, yet was not fully revealed for your benefit until [these] final times.

Ephesians 1:4

Even before the creation of the world God chose us, who are in [fellowship with] Christ, to be dedicated [to Him] and to be without just blame in His sight. Out of love

Colossians 1:26

[This message is] the secret which has been kept hidden throughout the ages and generations, but has now been revealed to God's saints [i.e., His holy people].

Hebrews 9:26

For then He would have had to suffer often since the creation of the world; but now at the end of the ages [i.e., the final period of world history] He has been revealed once [for all] to remove sin by sacrificing Himself.

2 Timothy 1:9-10

[It is] God who saved us and called us to live holy lives [or, "to be dedicated people"], not as a result of our [good] deeds, but in harmony with His own purpose and unearned favor. [This was] given to us through [the atoning work of] Christ Jesus, before the beginning of time. [Note: Salvation through Christ was planned before time began. See Titus 1:2; Rom. 16:25; Eph. 1:4].

Titus 1:2-3

[and provides] hope for never ending life. God, who cannot lie, promised this [life] before the beginning of time,

Hebrews 1:2

[but] during these final days He has spoken to us through His Son [Note: This period refers to the Christian age (See Acts 2:14-36)], whom He appointed to be heir of all things [and] through whom He created the universe. [See John 1:3; Col. 1:16].

Revelation 13:8

And everyone who lives on earth will worship the beast, [even those] people whose names had not been recorded in the book of life belonging to the Lamb, who was killed [in prospect] from the creation of the world. [Note: This sentence could also read "...not been recorded from the creation of the world in the book of life belonging to the Lamb who was killed"].

Acts 3:25-26

You people are descendants of these prophets and [recipients] of the Agreement God made with your forefathers when He said to Abraham [Gen. 12:3], 'And through your seed [i.e., your descendant Jesus] all the people of the earth will receive the blessings [of God].'

Romans 3:25

God presented Jesus as the atoning sacrifice [for our sins] through [our] faith in His blood [i.e., His death on the cross]. This was in order to demonstrate His justice when, by using forbearance, He passed over people's sins in previous generations.

Romans 16:25-26

Now may there be glory for ever, through Jesus Christ, to the only wise God, who is able to make you stand firm [in the faith], according to the good news and proclamation of Jesus Christ. This message is the secret which was [eventually] revealed, after having been kept quiet about for long ages.

Galatians 4:4

But, when [God's] timing fully arrived, He sent His Son, born to a woman [i.e., Mary], born during [the time when] the law [of Moses was still in effect],

Ephesians 1:10

[He did this] to fulfill His plan at the proper time, by bringing together everything [in the universe] under Christ's headship --- things both in heaven and on earth.

Ephesians 3:9

[I was given the responsibility] to enlighten all people regarding the working out of God's secret plan, which has been kept hidden for ages in [the heart of] God, who created everything.

Ephesians 3:11

according to God's eternal purpose which He carried out through Christ Jesus our Lord.

1 John 1:2

Truly, this "Life" was made known to us and we have [actually] seen it [i.e., Him], and so we testify and proclaim to you [that He is] "the Eternal Life," who was with the Father and was made known to us [apostles].

1 John 3:5

But, you [should] know that Christ appeared [on earth] to take away [our] sins, and that there is no sin in His life [See II Cor. 5:21].

1 John 3:8

[But] the person who continues to live a sinful life belongs to the devil, because the devil has continued to sin since the beginning [See Gen. 3]. For this is the reason that the Son of God came [into the world]; it was to destroy the works [i.e., the influence of] the devil [in people's lives].

1 John 4:9-10

Here is the way God's love for us was demonstrated; He sent His one and only Son into the world so that we could have [spiritual] life through Him.

Treasury of Scripture Knowledge

Summary

Who verily was foreordained before the foundation of the world, but was manifest in these last times for you,

General references

Bible References

But

Acts 3:25
You people are descendants of these prophets and [recipients] of the Agreement God made with your forefathers when He said to Abraham [Gen. 12:3], 'And through your seed [i.e., your descendant Jesus] all the people of the earth will receive the blessings [of God].'
Colossians 1:26
[This message is] the secret which has been kept hidden throughout the ages and generations, but has now been revealed to God's saints [i.e., His holy people].
1 John 1:2
Truly, this "Life" was made known to us and we have [actually] seen it [i.e., Him], and so we testify and proclaim to you [that He is] "the Eternal Life," who was with the Father and was made known to us [apostles].
1 John 3:5
But, you [should] know that Christ appeared [on earth] to take away [our] sins, and that there is no sin in His life [See II Cor. 5:21].
1 John 4:9
Here is the way God's love for us was demonstrated; He sent His one and only Son into the world so that we could have [spiritual] life through Him.

In

Galatians 4:4
But, when [God's] timing fully arrived, He sent His Son, born to a woman [i.e., Mary], born during [the time when] the law [of Moses was still in effect],
Ephesians 1:10
[He did this] to fulfill His plan at the proper time, by bringing together everything [in the universe] under Christ's headship --- things both in heaven and on earth.
Hebrews 1:2
[but] during these final days He has spoken to us through His Son [Note: This period refers to the Christian age (See Acts 2:14-36)], whom He appointed to be heir of all things [and] through whom He created the universe. [See John 1:3; Col. 1:16].
Hebrews 9:26
For then He would have had to suffer often since the creation of the world; but now at the end of the ages [i.e., the final period of world history] He has been revealed once [for all] to remove sin by sacrificing Himself.

General references

Acts 15:18
This is what the Lord said when He predicted these things long ago.'