Ps 7:9, Ps 139:1, Jer 11:20, Jer 17:10, Rom 8:27, Prov 24:12, Acts 1:24, 1 Kings 8:39, Prov 21:2, 1 Thess 2:4

Only God examines the heart of man.

Ps 7:9 Oh let the wickedness of the wicked come to an end; but establish the just: for the righteous God trieth the hearts and reins.

Ps 139:1 O lord, thou hast searched me, and known me.

Jer 11:20 But, O Lord of hosts, that judgest righteously, that triest the reins and the heart, let me see thy vengeance on them: for unto thee have I revealed my cause.

Jer 17:10 But, O Lord of hosts, that judgest righteously, that triest the reins and the heart, let me see thy vengeance on them: for unto thee have I revealed my cause.

Rom 8:27 And he that searcheth the hearts knoweth what is the mind of the Spirit, because he maketh intercession for the saints according to the will of God.

Prov 24:12 If thou sayest, Behold, we knew it not; doth not he that pondereth the heart consider it? and he that keepeth thy soul, doth not he know it? and shall not he render to every man according to his works?

Acts 1:24 And they prayed, and said, Thou, Lord, which knowest the hearts of all men, shew whether of these two thou hast chosen,

1 Kings 8:39 Then hear thou in heaven thy dwelling place, and forgive, and do, and give to every man according to his ways, whose heart thou knowest; (for thou, even thou only, knowest the hearts of all the children of men;)

Prov 21:2 Every way of a man is right in his own eyes: but the Lord pondereth the hearts.

1 Thess 2:4 But as we were allowed of God to be put in trust with the gospel, even so we speak; not as pleasing men, but God, which trieth our hearts.

Jesus also searches our hearts.

Rev 2:23 And I will kill her children with death; and all the churches shall know that I am he which searcheth the reins and hearts: and I will give unto every one of you according to your works.