Matthew 7:7-8

"Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened to you;

John 1:47

Jesus saw Nathanael coming to Him, and He saith to him, "Behold, an Israelite, indeed, in whom there is no guile!"

John 2:25

and had no need that any one should testify concerning man; for He Himself knew what was in man,

John 4:24

God is a spirit; and those who worship Him must worship in spirit and truth."

John 8:55

And ye have not known Him, but I know Him; and, if I should say, I know Him not, I shall be a liar like you. But I know Him, and I keep His word.

John 17:3

And this is the eternal life, that they know Thee, the only true God, and Jesus Christ Whom Thou didst send.

John 21:17

He saith to him the third time, "Simon, son of John, do you fondly love Me?" Peter was grieved, because He said to him the third time "Do you fondly love Me?" and he said to Him, "Lord, Thou knowest all things; Thou knowest that I do fondly love Thee." Jesus saith to him, "Feed My sheep.

Acts 1:24

And, praying, they said, "Thou, Lord, Who knowest the hearts of all men, show which of these two Thou didst choose,

Acts 17:23

for, passing through, and considering your objects of worship, I found also an altar on which had been inscribed, TO AN UNKNOWN GOD. What, therefore, in ignorance ye worship, this I declare to you.

Acts 17:30

God, therefore, having overlooked the time of ignorance, now commands all men everywhere to repent;

Romans 1:28-29

And, as they did not approve the holding of God in their knowledge, God delivered them up to a reprobate mind, to do those things which are not becoming;

1 Corinthians 15:34

Awake to soberness righteously, and sin not; for some have not a knowledge of God: I say it to your shame!

2 Corinthians 4:6

because it is the God Who said, "Light shall shine out of darkness," Who shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.

2 Corinthians 8:12

for, if the readiness is present, it is acceptable according to what one has, not according to what he has not.

2 Corinthians 9:7

Let each one do as he has purposed in his heart, not grudgingly or of necessity; for God loveth a cheerful giver.

Hebrews 4:13

And there is no creature that is not manifest in His presence; but all things are naked and laid bare to the eyes of Him with Whom is our account.

Hebrews 10:38-39

"But My righteous one shall live by faith, and, if he draw back, My soul has no pleasure in him."

Hebrews 12:28

Wherefore, receiving a kingdom that cannot be shaken, let us have grace, whereby we may serve God acceptably, with reverence and godly fear;

James 4:8-11

Draw nigh to God, and He wild draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double-minded.

1 Peter 5:2

feed the flock of God which is among you, overseeing it, not by constraint, but willingly; nor yet for base gain, but of a ready mind;

Revelation 2:23

And her children I will slay with death; and all the assemblies shall know that I am He Who searcheth the reins and hearts; and I will give to you, each one, according to your works.

Treasury of Scripture Knowledge

Summary

And thou, Solomon my son, know thou the God of thy father, and serve him with a perfect heart and with a willing mind: for the LORD searcheth all hearts, and understandeth all the imaginations of the thoughts: if thou seek him, he will be found of thee; but if thou forsake him, he will cast thee off for ever.

If thou seek

If thou forsake

Bible References

Know thou

John 8:55
And ye have not known Him, but I know Him; and, if I should say, I know Him not, I shall be a liar like you. But I know Him, and I keep His word.
John 17:3
And this is the eternal life, that they know Thee, the only true God, and Jesus Christ Whom Thou didst send.
Acts 17:23
for, passing through, and considering your objects of worship, I found also an altar on which had been inscribed, TO AN UNKNOWN GOD. What, therefore, in ignorance ye worship, this I declare to you.
Romans 1:28
And, as they did not approve the holding of God in their knowledge, God delivered them up to a reprobate mind, to do those things which are not becoming;
1 Corinthians 15:34
Awake to soberness righteously, and sin not; for some have not a knowledge of God: I say it to your shame!
2 Corinthians 4:6
because it is the God Who said, "Light shall shine out of darkness," Who shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.

Serve him

John 1:47
Jesus saw Nathanael coming to Him, and He saith to him, "Behold, an Israelite, indeed, in whom there is no guile!"
John 4:24
God is a spirit; and those who worship Him must worship in spirit and truth."
Romans 1:29
having become filled with all unrighteousness, wickedness, covetousness, maliciousness; full of envy, murder, strife, deceit, malignity; whisperers,
Hebrews 12:28
Wherefore, receiving a kingdom that cannot be shaken, let us have grace, whereby we may serve God acceptably, with reverence and godly fear;

A willing mind

2 Corinthians 8:12
for, if the readiness is present, it is acceptable according to what one has, not according to what he has not.
2 Corinthians 9:7
Let each one do as he has purposed in his heart, not grudgingly or of necessity; for God loveth a cheerful giver.
1 Peter 5:2
feed the flock of God which is among you, overseeing it, not by constraint, but willingly; nor yet for base gain, but of a ready mind;

If thou seek

Matthew 7:7
"Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened to you;
James 4:8
Draw nigh to God, and He wild draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double-minded.

If thou forsake

Hebrews 10:38
"But My righteous one shall live by faith, and, if he draw back, My soul has no pleasure in him."