Acts 4:25
"Who by the mouth of thy servant David hast said, Why did the heathen rage, and the people imagine vain things?"
Cross References (ranked by relevance)
Acts 1:16
Men and brethren, this scripture must needs have been fulfilled, which the Holy Ghost by the mouth of David spake before concerning Judas, which was guide to them that took Jesus.
Acts 2:30
Therefore being a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins, according to the flesh, he would raise up Christ to sit on his throne;