Acts 17:23

for as I was passing along, and looking at what ye worshipped, I found an altar on which there was inscribed, "To the unknown God." Whom therefore ye worship unknown, Him do I declare unto you.

John 4:22

Ye worship ye know not what; but we worship what we know: for salvation is from the Jews.

Acts 17:30

Wherefore though God overlooked the times of this ignorance, He now requireth all men every where to repent.

2 Thessalonians 2:4

the son of perdition, who opposeth and exalteth himself above all that is called God, or the object of worship; so that he sits as God in the temple of God, shewing himself that he is God.

2 Thessalonians 2:4

the son of perdition, who opposeth and exalteth himself above all that is called God, or the object of worship; so that he sits as God in the temple of God, shewing himself that he is God.

2 Thessalonians 2:4

the son of perdition, who opposeth and exalteth himself above all that is called God, or the object of worship; so that he sits as God in the temple of God, shewing himself that he is God.

Matthew 15:9

but in vain do they worship me, teaching for doctrines the injunctions of men.

John 8:54

Jesus answered, If I honour myself, my honor is nothing: it is my Father that glorifieth me, of whom ye say that He is your God.

John 17:3

and this is life eternal, to know Thee the only true God, and Jesus Christ whom thou hast sent.

John 17:25

O righteous Father, the world indeed hath not known Thee: but I have known Thee, and these have known that Thou hast sent me.

Romans 1:20-25

Inasmuch as from the first creation of the world, the invisible things of Him, even his eternal power and Godhead, are, if attended to, clearly seen in his works:

Romans 1:28

And as they were not careful to acknowledge God, God gave them up to an undiscerning mind to do things that were not fit to be done:

1 Corinthians 1:21

For, since in the wisdom of God the world by it's wisdom knew not God, it pleased God by what they called the folly of preaching to save those that believe.

1 Corinthians 8:5

For though there be some that are called Gods, whether in heaven or on earth, (as there are among the heathen gods many,

2 Corinthians 4:4-6

among whom the god of this world hath blinded the minds of the unbelieving, so that the light of the glorious gospel of Christ, who is the image of God, doth not shine unto them:

Galatians 4:8-9

But then indeed, when ye knew not God, ye served those which in reality are no gods.

Ephesians 2:12

and ye were at that time without Christ, aliens from the commonwealth of Israel, and strangers to the covenants of promise, having no hope, and without God in the world: but now in Christ Jesus,

1 Timothy 1:17

Now to the King eternal, immortal, invisible, the only wise God, be honor and glory for ever and ever. Amen.

1 John 5:20

But we know that the son of God is come, and hath given us understanding, that we may know Him that is true, and we are in Him that is true, and in his son Jesus Christ: He is the true God, and eternal life.

Treasury of Scripture Knowledge

Summary

For as I passed by, and beheld your devotions, I found an altar with this inscription, TO THE UNKNOWN GOD. Whom therefore ye ignorantly worship, him declare I unto you.

Bible References

Devotions

Romans 1:23
and changed the glory of the incorruptible God for an image like to corruptible man, and birds, and beasts, and reptiles.
1 Corinthians 8:5
For though there be some that are called Gods, whether in heaven or on earth, (as there are among the heathen gods many,
2 Thessalonians 2:4
the son of perdition, who opposeth and exalteth himself above all that is called God, or the object of worship; so that he sits as God in the temple of God, shewing himself that he is God.

To

John 17:3
and this is life eternal, to know Thee the only true God, and Jesus Christ whom thou hast sent.
Romans 1:20
Inasmuch as from the first creation of the world, the invisible things of Him, even his eternal power and Godhead, are, if attended to, clearly seen in his works:
1 Corinthians 1:21
For, since in the wisdom of God the world by it's wisdom knew not God, it pleased God by what they called the folly of preaching to save those that believe.
2 Corinthians 4:4
among whom the god of this world hath blinded the minds of the unbelieving, so that the light of the glorious gospel of Christ, who is the image of God, doth not shine unto them:
Galatians 4:8
But then indeed, when ye knew not God, ye served those which in reality are no gods.
Ephesians 2:12
and ye were at that time without Christ, aliens from the commonwealth of Israel, and strangers to the covenants of promise, having no hope, and without God in the world: but now in Christ Jesus,
1 Timothy 1:17
Now to the King eternal, immortal, invisible, the only wise God, be honor and glory for ever and ever. Amen.
1 John 5:20
But we know that the son of God is come, and hath given us understanding, that we may know Him that is true, and we are in Him that is true, and in his son Jesus Christ: He is the true God, and eternal life.

Ignorantly

Acts 17:30
Wherefore though God overlooked the times of this ignorance, He now requireth all men every where to repent.
Matthew 15:9
but in vain do they worship me, teaching for doctrines the injunctions of men.
John 4:22
Ye worship ye know not what; but we worship what we know: for salvation is from the Jews.
John 8:54
Jesus answered, If I honour myself, my honor is nothing: it is my Father that glorifieth me, of whom ye say that He is your God.