Original Verse:
1st Kings Chapter 1 Verse 21Otherwise it will come to pass, when my lord the king shall sleep with his fathers, that I and my son Solomon shall be counted offenders.

Reference Verses:
Deuteronomy Chapter 31 Verse 16And Jehovah said unto Moses, Behold, thou shalt sleep with thy fathers; and this people will rise up, and play the harlot after the strange gods of the land, whither they go to be among them, and will forsake me, and break my covenant which I have made with them.
2nd Samuel Chapter 7 Verse 12When thy days are fulfilled, and thou shalt sleep with thy fathers, I will set up thy seed after thee, that shall proceed out of thy bowels, and I will establish his kingdom.
1st Kings Chapter 2 Verse 10And David slept with his fathers, and was buried in the city of David.