1 Samuel 7:3

And Samuel spake unto all the house of Israel, saying, If ye do return unto Jehovah with all your heart, then put away the foreign gods and the Ashtaroth from among you, and direct your hearts unto Jehovah, and serve him only; and he will deliver you out of the hand of the Philistines.

Joshua 24:14

Now therefore fear Jehovah, and serve him in sincerity and in truth; and put away the gods which your fathers served beyond the River, and in Egypt; and serve ye Jehovah.

Genesis 35:2

Then Jacob said unto his household, and to all that were with him, Put away the foreign gods that are among you, and purify yourselves, and change your garments:

Deuteronomy 6:13

Thou shalt fear Jehovah thy God; and him shalt thou serve, and shalt swear by his name.

Deuteronomy 13:4

Ye shall walk after Jehovah your God, and fear him, and keep his commandments, and obey his voice, and ye shall serve him, and cleave unto him.

Judges 2:13

And they forsook Jehovah, and served Baal and the Ashtaroth.

Isaiah 55:7

let the wicked forsake his way, and the unrighteous man his thoughts; and let him return unto Jehovah, and he will have mercy upon him; and to our God, for he will abundantly pardon.

Matthew 4:10

Then saith Jesus unto him, Get thee hence, Satan: for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.

Luke 4:8

And Jesus answered and said unto him, It is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.

Deuteronomy 10:20

Thou shalt fear Jehovah thy God; him shalt thou serve; and to him shalt thou cleave, and by his name shalt thou swear.

Joshua 24:23

Now therefore put away,'said he , the foreign gods which are among you, and incline your heart unto Jehovah, the God of Israel.

1 Kings 8:48

if they return unto thee with all their heart and with all their soul in the land of their enemies, who carried them captive, and pray unto thee toward their land, which thou gavest unto their fathers, the city which thou hast chosen, and the house which I have built for thy name:

Deuteronomy 30:2-10

and shalt return unto Jehovah thy God, and shalt obey his voice according to all that I command thee this day, thou and thy children, with all thy heart, and with all thy soul;

2 Chronicles 30:19

that setteth his heart to seek God, Jehovah, the God of his fathers, though he be not cleansed according to the purification of the sanctuary.

Joel 2:12-13

Yet even now, saith Jehovah, turn ye unto me with all your heart, and with fasting, and with weeping, and with mourning:

Judges 10:6

And the children of Israel again did that which was evil in the sight of Jehovah, and served the Baalim, and the Ashtaroth, and the gods of Syria, and the gods of Sidon, and the gods of Moab, and the gods of the children of Ammon, and the gods of the Philistines; and they forsook Jehovah, and served him not.

Judges 10:16

And they put away the foreign gods from among them, and served Jehovah; and his soul was grieved for the misery of Israel.

1 Samuel 31:10

And they put his armor in the house of the Ashtaroth; and they fastened his body to the wall of Beth-shan.

1 Chronicles 22:19

Now set your heart and your soul to seek after Jehovah your God; arise therefore, and build ye the sanctuary of Jehovah God, to bring the ark of the covenant of Jehovah, and the holy vessels of God, into the house that is to be built to the name of Jehovah.

1 Chronicles 28:9

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 Jehovah 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.

2 Chronicles 19:3

Nevertheless there are good things found in thee, in that thou hast put away the Asheroth out of the land, and hast set thy heart to seek God.

Job 11:13-14

If thou set thy heart aright, And stretch out thy hands toward him;

Proverbs 16:1

The plans of the heart belong to man; But the answer of the tongue is from Jehovah.

Jeremiah 4:3-4

For thus saith Jehovah to the men of Judah and to Jerusalem, Break up your fallow ground, and sow not among thorns.

Ezekiel 18:31

Cast away from you all your transgressions, wherein ye have transgressed; and make you a new heart and a new spirit: for why will ye die, O house of Israel?

Hosea 6:1-2

Come, and let us return unto Jehovah; for he hath torn, and he will heal us; he hath smitten, and he will bind us up.

Hosea 14:1

O Israel, return unto Jehovah thy God; for thou hast fallen by thine iniquity.

Matthew 6:24

No man can serve two masters; for either he will hate the one, and love the other; or else he will hold to one, and despise the other. Ye cannot serve God and mammon.

Matthew 15:8

This people honoreth me with their lips; But their heart is far from me.

John 4:24

God is a Spirit: and they that worship him must worship in spirit and truth.

Treasury of Scripture Knowledge

Summary

And Samuel spake unto all the house of Israel, saying, If ye do return unto the LORD with all your hearts, then put away the strange gods and Ashtaroth from among you, and prepare your hearts unto the LORD, and serve him only: and he will deliver you out of the hand of the Philistines.

General references

Bible References

Return

Deuteronomy 30:2
and shalt return unto Jehovah thy God, and shalt obey his voice according to all that I command thee this day, thou and thy children, with all thy heart, and with all thy soul;
1 Kings 8:48
if they return unto thee with all their heart and with all their soul in the land of their enemies, who carried them captive, and pray unto thee toward their land, which thou gavest unto their fathers, the city which thou hast chosen, and the house which I have built for thy name:
Isaiah 55:7
let the wicked forsake his way, and the unrighteous man his thoughts; and let him return unto Jehovah, and he will have mercy upon him; and to our God, for he will abundantly pardon.
Hosea 6:1
Come, and let us return unto Jehovah; for he hath torn, and he will heal us; he hath smitten, and he will bind us up.
Hosea 14:1
O Israel, return unto Jehovah thy God; for thou hast fallen by thine iniquity.
Joel 2:12
Yet even now, saith Jehovah, turn ye unto me with all your heart, and with fasting, and with weeping, and with mourning:

Prepare

Deuteronomy 30:6
And Jehovah thy God will circumcise thy heart, and the heart of thy seed, to love Jehovah thy God with all thy heart, and with all thy soul, that thou mayest live.
1 Chronicles 22:19
Now set your heart and your soul to seek after Jehovah your God; arise therefore, and build ye the sanctuary of Jehovah God, to bring the ark of the covenant of Jehovah, and the holy vessels of God, into the house that is to be built to the name of Jehovah.
1 Chronicles 28:9
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 Jehovah 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.
2 Chronicles 30:19
that setteth his heart to seek God, Jehovah, the God of his fathers, though he be not cleansed according to the purification of the sanctuary.
Job 11:13
If thou set thy heart aright, And stretch out thy hands toward him;
Proverbs 16:1
The plans of the heart belong to man; But the answer of the tongue is from Jehovah.
Jeremiah 4:3
For thus saith Jehovah to the men of Judah and to Jerusalem, Break up your fallow ground, and sow not among thorns.
Ezekiel 18:31
Cast away from you all your transgressions, wherein ye have transgressed; and make you a new heart and a new spirit: for why will ye die, O house of Israel?
Matthew 15:8
This people honoreth me with their lips; But their heart is far from me.
John 4:24
God is a Spirit: and they that worship him must worship in spirit and truth.

Serve him

Deuteronomy 6:13
Thou shalt fear Jehovah thy God; and him shalt thou serve, and shalt swear by his name.
Deuteronomy 10:20
Thou shalt fear Jehovah thy God; him shalt thou serve; and to him shalt thou cleave, and by his name shalt thou swear.
Deuteronomy 13:4
Ye shall walk after Jehovah your God, and fear him, and keep his commandments, and obey his voice, and ye shall serve him, and cleave unto him.
Matthew 4:10
Then saith Jesus unto him, Get thee hence, Satan: for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.
Matthew 6:24
No man can serve two masters; for either he will hate the one, and love the other; or else he will hold to one, and despise the other. Ye cannot serve God and mammon.
Luke 4:8
And Jesus answered and said unto him, It is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.

General references

Ecclesiastes 9:17
The words of the wise heard in quiet are better than the cry of him that ruleth among fools.

American Standard Version Public Domain