Joel 2:12

And now therefore saith the LORD: Turn to me with all your hearts, in fasting and lamentation.

Jeremiah 4:1

O Israel, if thou wilt turn thee, then turn unto me, sayeth the LORD. And if thou wilt put away thine abominations out of my sight, thou shalt not be moved:

Hosea 12:6

Then turn to thy God, keep mercy and equity, and hope still in thy God.

Deuteronomy 4:29-30

Neverthelater, ye shall seek the LORD your God even there, and shalt find him if thou seek him with all thine heart and with all thy soul.

1 Samuel 7:3

And Samuel spake unto all Israel, saying, "If ye be come again unto the LORD with all your hearts, then put away the strange gods from among you, and Ashtaroth, and prepare your hearts unto the LORD and serve him alone; and so shall he rid you out of the hands of the Philistines."

1 Samuel 7:6

And they gathered together to Mizpeh, and drew water and poured it out before the LORD and fasted the same day, and said there, "We have sinned against the LORD." And Samuel judged the causes of the children of Israel in Mizpeh.

Judges 20:26

Then the children of Israel and all the people went up and came unto Bethel, and wept and sat there before the LORD, and fasted the same day unto evening, and offered burnt offerings and peace offerings before the LORD.

1 Kings 8:47-49

yet if they turn again unto their hearts in the land where they be in captivity, and return and pray unto thee in the land of them that hold them captive, saying, 'We have sinned and have done wickedly and have trespassed,'

2 Chronicles 6:38-39

and turn again to thee, with all their hearts and all their souls, in the land of their captivity where they be kept in bondage, and so pray toward their land which thou gavest unto their fathers, and city which thou hast chosen, and to his house which I have built for thy name;

2 Chronicles 7:13-14

Moreover, if I shut up heaven that there be no rain, or if I command the locusts to devour the land, or if I send pestilence among my people -

2 Chronicles 20:3-4

And Jehoshaphat feared and set himself to seek the LORD, and proclaimed fasting throughout all Judah.

Nehemiah 9:1-2

In the four and twentieth day of this month came the children of Israel together with fasting, and sackcloth, and earth upon them,

Isaiah 22:12

And at the same time shall the LORD of Hosts call men to weeping, mourning, to baldness and a putting on of sackcloth.

Isaiah 55:6-7

Seek the LORD, while he may be found, and call upon him while he is nigh.

Jeremiah 29:12-13

Ye shall cry unto me, ye shall go and call upon me, and I shall hear you.

Lamentations 3:40-41

{Nun} Let us look well upon our own ways, and remember ourselves, and turn again to the LORD.

Hosea 6:1

In their adversity they shall seek me, and say, "Come, let us turn again to the LORD: for he hath smitten us, and he shall heal us;

Hosea 14:1

Turn Israel unto the LORD thy God: For thou art fallen for thy wickednesses' sake.

Jonah 3:5-8

And the people of Nineveh believed God, and proclaimed fasting, and arrayed themselves in sackcloth, as well the great as the small of them.

Zechariah 1:3-4

And say thou unto them, 'Thus sayeth the LORD of Hosts: Turn you unto me, sayeth the LORD of Hosts; and I will turn me unto you, sayeth the LORD of Hosts.

Zechariah 7:3

and that they should say unto the priests which were in the house of the LORD of Hosts, and to the prophets, "Should I weep in the fifth month, and abstain, as I have done now certain years?"

Zechariah 7:5

"Speak unto all the people of the land, and to the priests, and say, 'When ye fasted and mourned in the fifth and seventh month, now this seventy years, did ye fast unto me?

Zechariah 12:10-14

Moreover, upon the house of David and upon the citizens of Jerusalem, will I pour out the spirit of grace and prayer, so that they shall look upon me, whom they have pierced: and they shall beweep him, as men mourn for their only begotten son: Yea, and be sorry for him, as men are sorry for their first child

Acts 26:20

but showed first unto them of Damascus, and at Jerusalem, and throughout all the coasts of Jewry, and to the gentiles, that they should repent, and turn to God, and do the right works of repentance.

James 4:8-9

Draw nigh to God, and he will draw nigh to you. Cleanse your hands ye sinners, and purge your hearts ye wavering minded.

Treasury of Scripture Knowledge

Summary

Therefore also now, saith the LORD, turn ye even to me with all your heart, and with fasting, and with weeping, and with mourning:

Bible References

With fasting

Judges 20:26
Then the children of Israel and all the people went up and came unto Bethel, and wept and sat there before the LORD, and fasted the same day unto evening, and offered burnt offerings and peace offerings before the LORD.
1 Samuel 7:6
And they gathered together to Mizpeh, and drew water and poured it out before the LORD and fasted the same day, and said there, "We have sinned against the LORD." And Samuel judged the causes of the children of Israel in Mizpeh.
2 Chronicles 20:3
And Jehoshaphat feared and set himself to seek the LORD, and proclaimed fasting throughout all Judah.
Nehemiah 9:1
In the four and twentieth day of this month came the children of Israel together with fasting, and sackcloth, and earth upon them,
Isaiah 22:12
And at the same time shall the LORD of Hosts call men to weeping, mourning, to baldness and a putting on of sackcloth.
Jonah 3:5
And the people of Nineveh believed God, and proclaimed fasting, and arrayed themselves in sackcloth, as well the great as the small of them.
Zechariah 7:3
and that they should say unto the priests which were in the house of the LORD of Hosts, and to the prophets, "Should I weep in the fifth month, and abstain, as I have done now certain years?"
Zechariah 12:10
Moreover, upon the house of David and upon the citizens of Jerusalem, will I pour out the spirit of grace and prayer, so that they shall look upon me, whom they have pierced: and they shall beweep him, as men mourn for their only begotten son: Yea, and be sorry for him, as men are sorry for their first child
James 4:8
Draw nigh to God, and he will draw nigh to you. Cleanse your hands ye sinners, and purge your hearts ye wavering minded.