John Gill Commentary 1 Samuel 22:23

"Abide thou with me, fear not; for he that seeketh my life seeketh thy life: for with me thou shalt be in safeguard." — 1 Samuel 22:23 (ASV)

Abide you with me, fear not He appeared to be in a fright; which is not to be wondered at, as not knowing what to do, and where to go and provide for his safety; when, to allay his fears, and make him easy, David invites and encourages him to stay with him, and not be afraid of Saul, nor any other:

for he that seeketh my life seeketh your life ; or, as Kimchi observes, it may be interpreted, "my life he seeks who seeks your life"; we are in the same circumstances, and have the same common enemy, and therefore it is best and safest to be together; as the Targum, ``he that seeks to kill me seeks to kill you;'' and as Jarchi adds, he that loves me will love you, and he that keeps my life will keep yours:

but with me you [shall be] in safeguard ; intimating, that he would be as careful of him as of himself; and that for this reason, as Ben Gersom suggests, because he brought the ephod with the Urim and Thummim with him, by which he could inquire of God for him; but this was the thing David was confident of, that God would preserve him, and raise him to the kingdom, and therefore Abiathar might be sure of safety with him: at this time he penned the fifty second psalm, which shows the frame of spirit he was now in; see (Psalms 52:1–9) .