Psalm 105:10
"And confirmed the same unto Jacob for a law, and to Israel for an everlasting covenant:"
Cross References (ranked by relevance)
2 Samuel 23:5
Although my house be not so with God; yet he hath made with me an everlasting covenant, ordered in all things, and sure: for this is all my salvation, and all my desire, although he make it not to grow.
Hebrews 13:20
Now the God of peace, that brought again from the dead our Lord Jesus, that great shepherd of the sheep, through the blood of the everlasting covenant,