SEV Biblia, Chapter 18:6
Salió, pues, el pueblo al campo contra Israel, y se dio la batalla en el bosque de Efraín.
John Gill's Bible Commentary
Ver. 6. So the people went out into the field against Israel , etc.] Josephus calls it a great field, with a wood behind it: and the battle was in the wood of Ephraim ; or near it rather; not in a wood in the tribe of Ephraim, which lay on this side Jordan; whereas this battle was fought on the other side Jordan, in the land of Gilead, not far from Mahanaim, where was this wood; and which was so called, either from the slaughter of the Ephraimites here in the times of Jephthah, ( Judges 12:4-6); or from the Ephraimites feeding their cattle here and near it; for the Jews say f305 , that Joshua gave them a grant to feed their cattle in any wood in any of the tribes of Israel; and lying near Jordan, they used to drive their cattle over to this place, from whence it had its name.
Matthew Henry Commentary
Verses 1-8 - How does David render good for evil! Absalom would have only Davi smitten; David would have only Absalom spared. This seems to be resemblance of man's wickedness towards God, and God's mercy to man, of which it is hard to say which is most amazing. Now the Israelites se what it is to take counsel against the Lord and his anointed.
Original Hebrew
ויצא 3318 העם 5971 השׂדה 7704 לקראת 7125 ישׂראל 3478 ותהי 1961 המלחמה 4421 ביער 3293 אפרים׃ 669