Acts 13:34

Overview - Acts 13
Paul and Barnabas are chosen to go to the Gentiles.
Of Sergius Paulus, and Elymas the sorcerer.
13 Paul preaches at Antioch that Jesus is Christ.
42 The Gentiles believe;
44 but the Jews gainsay and blaspheme, whereupon they turn to the Gentiles, of whom many believe.
50 The Jews raise a persecution against Paul and Barnabas, who go to Iconium.
Treasury of Scripture Knowledge

Acts 13:34  (King James Version)
And as concerning that he raised him up from the dead, now no more to return to corruption, he said on this wise, I will give you the sure mercies of David.

Romans 6:9

I will
Isaiah 55:3

the sure
2 Samuel 7:14-16 ; 23:5 Psalms 89:2-4 Psalms 89:19-37 ; Jeremiah 33:15-17 Jeremiah 33:26 ; Ezekiel 34:23 Ezekiel 34:24
Ezekiel 37:24 Ezekiel 37:25 ; Hosea 3:5 ; Amos 9:11 ; Zechariah 12:8

"Greek [ta hosios ,] holy, or just, things; which word the LXX., both in the place of Isaiah 55:3 ,and in many others, use for that which is in the Hebrew mercies."