1 Samuel 3:19

“And Samuel grew, etc.] Not only in years and stature, but in grace and goodness, in wisdom, knowledge, and understanding, both with respect to things natural and spiritual, and in esteem, credit, and reputation among men: and the Lord was with him; he was not only in favour with men, but with God; and had fresh and repeated tokens of the grace and good will of God towards him; he indulged him with his presence, and assisted him in his service, and prospered and succeeded him in all things in which he was engaged. The Targum is, “the Word of the Lord was his help;” the essential Word of God, the Messiah: and did let none of his words fall to the ground f75; in allusion either to water that…”

“Fail, &c. - That is, want its effect: God made good all his predictions. A metaphor from precious liquors, which when they are spilt upon the ground, are altogether useless. 1 Kings (1 Samuel) 3:20”

“3:19 proved to be reliable: Samuel was an authentic prophet (3:20; see Deut 18:21-22).”

“grew: Sa1 2:21; Jdg 13:24; Luk 1:80, Luk 2:40, Luk 2:52 the Lord: Sa1 18:14; Gen 39:2, Gen 39:21-23; Isa 43:2; Mat 1:23; Luk 1:28; Co2 13:11, Co2 13:14; Ti2 4:22 let none: Sa1 9:6; Kg1 8:56; Isa 44:26 1 Kings (1 Samuel) 3:20”

“Thus Samuel grew, and Jehovah was with him, and let none of his words fall to the ground, i.e., left no word unfulfilled which He spoke through Samuel. (On הפּיל, see Jos 21:45; Jos 23:14; Kg1 8:56.) By this all Israel from Dan to Beersheba (see at Jdg 20:1) perceived that Samuel was found trustworthy, or approved (see Num 12:7) as a prophet of Jehovah. And the Lord continued to appear at Shiloh; for He revealed himself there to Samuel "in the word of Jehovah," i.e., through a prophetic announcement of His word. These three verses form the transition from the call of Samuel to the following account of his prophetic labours in Israel. At the close of Sa1 3:21, the lxx have appended a general…”