14 The has a lengthy addition here: “And Samuel was acknowledged to be a prophet of the Lord in all Israel, from one end to the other. Eli was very old and, as for his sons, their way kept getting worse and worse before the Lord.” The Hebraic nature of the Greek syntax used here suggests that the translator was accurately rendering a Hebrew variant and not simply expanding the text on his own initiative.
15 The chapter division at this point is inappropriate. 1 Sam 4:1a is best understood as the conclusion to chap. 3 rather than the beginning of chap. 4.

In other versions

And the Lord appeared again at Shiloh, for the Lord revealed himself to Samuel at Shiloh by the word of the Lord.

The Lord continued to appear at Shiloh, and there he revealed himself to Samuel through his word.

The Lord continued to appear in Shiloh, because there he revealed himself to Samuel by his word.

The Lord continued to appear at Shiloh and gave messages to Samuel there at the Tabernacle.

And Yahweh appeared again in Shiloh, for Yahweh revealed himself to Samuel in Shiloh through the word of Yahweh.

And the Lord appeared again in Shiloh: for the Lord revealed himself to Samuel in Shiloh by the word of the Lord.

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