Is Ephraim my dear son? etc. - The question implies that a negative answer was to be expected. Who would have thought that one so undutiful to His heavenly Father as Ephraim had been should still be regarded by God as a “pleasant child?” Certainly he was not so in respect to his sin. But by virtue of God’s “everlasting love” (Jer 31:3) on Ephraim’s being “turned” to God, he was immediately welcomed as God’s “dear son.” This verse sets forth God’s readiness to welcome the penitent (Jer 31:18, Jer 31:19), anticipating his return with prevenient grace and love. Compare Luk 15:20 : “When he was yet a great way off, his father saw him and had compassion,” etc.
spake against - threatened him for his idolatry.
remember - with favor and concern, as in Gen 8:1; Gen 30:22.
bowels ... troubled for him - (Deu 32:36; Isa 63:15; Hos 11:8) - namely, with the yearnings of compassionate love. The “bowels” include the region of the heart, the seat of the affections.