42 Then Jonathan said to David, "Go in peace, since both of us have sworn in the name of the Lord, saying, "The Lord shall be between me and you, and between my descendants and your descendants, forever.' " He got up and left; and Jonathan went into the city.
Matthew Henry's Commentary on 1 Samuel 20:42
Commentary on 1 Samuel 20:35-42
(Read 1 Samuel 20:35-42)
The separation of two such faithful friends was grievous to both, but David's case was the more deplorable, for David was leaving all his comforts, even those of God's sanctuary. Christians need not sorrow, as men without hope; but being one with Christ, they are one with each other, and will meet in his presence ere long, to part no more; to meet where all tears shall be wiped from their eyes.