Acts 1:24

And they prayed and said, “You, Lord, who know the hearts of all men, show which one of these two You have chosen

1 Samuel 16:7

But the Lord said to Samuel, “Do not look at his appearance or at the height of his stature, because I have rejected him; for God sees not as man sees, for man looks at the outward appearance, but the Lord looks at the heart.”

Jeremiah 17:10

“I, the Lord, search the heart,
I test the mind,
Even to give to each man according to his ways,
According to the results of his deeds.

Acts 15:8

And God, who knows the heart, testified to them giving them the Holy Spirit, just as He also did to us;

Acts 6:6

And these they brought before the apostles; and after praying, they laid their hands on them.

Revelation 2:23

And I will kill her children with pestilence, and all the churches will know that I am He who searches the minds and hearts; and I will give to each one of you according to your deeds.

Numbers 27:16

May the Lord, the God of the spirits of all flesh, appoint a man over the congregation,

1 Kings 8:39

then hear in heaven Your dwelling place, and forgive and act and render to each according to all his ways, whose heart You know, for You alone know the hearts of all the sons of men,

1 Chronicles 28:9

“As for you, my son Solomon, know the God of your father, and serve Him with a whole heart and a willing mind; for the Lord searches all hearts, and understands every intent of the thoughts. If you seek Him, He will let you find Him; but if you forsake Him, He will reject you forever.

1 Chronicles 29:17

Since I know, O my God, that You try the heart and delight in uprightness, I, in the integrity of my heart, have willingly offered all these things; so now with joy I have seen Your people, who are present here, make their offerings willingly to You.

Psalm 7:9

O let the evil of the wicked come to an end, but establish the righteous;
For the righteous God tries the hearts and minds.

Psalm 44:21

Would not God find this out?
For He knows the secrets of the heart.

Proverbs 3:5-6

Trust in the Lord with all your heart
And do not lean on your own understanding.

Proverbs 15:11

Sheol and Abaddon lie open before the Lord,
How much more the hearts of men!

Jeremiah 11:20

But, O Lord of hosts, who judges righteously,
Who tries the feelings and the heart,
Let me see Your vengeance on them,
For to You have I committed my cause.

Jeremiah 20:12

Yet, O Lord of hosts, You who test the righteous,
Who see the mind and the heart;
Let me see Your vengeance on them;
For to You I have set forth my cause.

Luke 6:12-13

It was at this time that He went off to the mountain to pray, and He spent the whole night in prayer to God.

John 2:24-25

But Jesus, on His part, was not entrusting Himself to them, for He knew all men,

John 21:17

He *said to him the third time, “Simon, son of John, do you love Me?” Peter was grieved because He said to him the third time, “Do you love Me?” And he said to Him, “Lord, You know all things; You know that I love You.” Jesus *said to him, Tend My sheep.

Acts 13:2-3

While they were ministering to the Lord and fasting, the Holy Spirit said, “Set apart for Me Barnabas and Saul for the work to which I have called them.”

Acts 14:23

When they had appointed elders for them in every church, having prayed with fasting, they commended them to the Lord in whom they had believed.

Romans 8:27

and He who searches the hearts knows what the mind of the Spirit is, because He intercedes for the saints according to the will of God.

Hebrews 4:13

And there is no creature hidden from His sight, but all things are open and laid bare to the eyes of Him with whom we have to do.

Treasury of Scripture Knowledge

Summary

And they prayed, and said, Thou, Lord, which knowest the hearts of all men, shew whether of these two thou hast chosen,

Bible References

They

Acts 13:2
While they were ministering to the Lord and fasting, the Holy Spirit said, “Set apart for Me Barnabas and Saul for the work to which I have called them.”
Proverbs 3:5
Trust in the Lord with all your heart
And do not lean on your own understanding.
Luke 6:12
It was at this time that He went off to the mountain to pray, and He spent the whole night in prayer to God.

Thou, lord

Acts 15:8
And God, who knows the heart, testified to them giving them the Holy Spirit, just as He also did to us;
Numbers 27:16
May the Lord, the God of the spirits of all flesh, appoint a man over the congregation,
1 Samuel 16:7
But the Lord said to Samuel, “Do not look at his appearance or at the height of his stature, because I have rejected him; for God sees not as man sees, for man looks at the outward appearance, but the Lord looks at the heart.”
1 Kings 8:39
then hear in heaven Your dwelling place, and forgive and act and render to each according to all his ways, whose heart You know, for You alone know the hearts of all the sons of men,
1 Chronicles 28:9
“As for you, my son Solomon, know the God of your father, and serve Him with a whole heart and a willing mind; for the Lord searches all hearts, and understands every intent of the thoughts. If you seek Him, He will let you find Him; but if you forsake Him, He will reject you forever.
1 Chronicles 29:17
Since I know, O my God, that You try the heart and delight in uprightness, I, in the integrity of my heart, have willingly offered all these things; so now with joy I have seen Your people, who are present here, make their offerings willingly to You.
Psalm 7:9
O let the evil of the wicked come to an end, but establish the righteous;
For the righteous God tries the hearts and minds.
Psalm 44:21
Would not God find this out?
For He knows the secrets of the heart.
Proverbs 15:11
Sheol and Abaddon lie open before the Lord,
How much more the hearts of men!
Jeremiah 11:20
But, O Lord of hosts, who judges righteously,
Who tries the feelings and the heart,
Let me see Your vengeance on them,
For to You have I committed my cause.
Jeremiah 17:10
“I, the Lord, search the heart,
I test the mind,
Even to give to each man according to his ways,
According to the results of his deeds.
Jeremiah 20:12
Yet, O Lord of hosts, You who test the righteous,
Who see the mind and the heart;
Let me see Your vengeance on them;
For to You I have set forth my cause.
John 2:24
But Jesus, on His part, was not entrusting Himself to them, for He knew all men,
John 21:17
He *said to him the third time, “Simon, son of John, do you love Me?” Peter was grieved because He said to him the third time, “Do you love Me?” And he said to Him, “Lord, You know all things; You know that I love You.” Jesus *said to him, Tend My sheep.
Hebrews 4:13
And there is no creature hidden from His sight, but all things are open and laid bare to the eyes of Him with whom we have to do.
Revelation 2:23
And I will kill her children with pestilence, and all the churches will know that I am He who searches the minds and hearts; and I will give to each one of you according to your deeds.