on the mountains - whereon they sacrificed to idols (Jer 2:20; Jer 3:6, Jer 3:23).
resting-place - for the “sheep,” continuing the image; Jehovah is the resting-place of His sheep (Mat 11:28). They rest in His “bosom” (Isa 40:11). Also His temple at Zion, their “rest,” because it is His (Psa 132:8, Psa 132:14).