The Lord was with him, and did let none of his words fall, &c.— None of the predictions of Samuel were unaccomplished; in the same manner as an arrow shot by a good archer fails not to arrive at its mark; for this is the metaphor. See Schultens's Orig. Heb. pars 2: page 143. Thus the Lord shewed that he was with him, or blessed him. Compare Genesis 31:2.
Related Commentaries of 1 Samuel 3:19
1 Samuel 3:19-20
19 And Samuel grew, and the LORD was with him, and did let none of his words fall to the ground.
20 And all Israel from Dan even to Beersheba knew that Samuel was establishedb to be a prophet of the LORD.