Whereas thou camest [but] yesterday, should I this day make thee go up and down with us? seeing I go whither I may, return thou, and take back thy brethren: mercy and truth [be] with thee.
Ver. 20. Should I this day make thee go up and down with us?] David had need enough of him; but yet would not do anything that had but a show of unwarrantableness in it.
Mercy and truth be with thee.] Mercy, the fruit of God's faithfulness, covenant kindness. See Psalms 25:10. So Paul prayeth for Onesiphorus. 2Ti 1:18 And such prayers could not be ineffectual; for God will gratify his afflicted; Zec 13:9 they may have even what they will of him.