1 Samuel 3:10
Lord came <0935 03068> [the Lord came.]
This seems to imply a visible appearance, as well as an audible voice.
<06471> [as at other.]
Samuel did not now rise and run as before, when thought he Eli called, but lay still and listened. All must be silent, when God speaks. Observe, however, Samuel in his reply left out one word: he did not say, Speak, Lord, but only Speak, for thy servant heareth; perhaps, as Bp. Patrick suggests, out of uncertainty, whether it was God that spake to him or not. However, by this answer way was made for the message he was now to receive, and Samuel was brought acquainted with the words of God and visions of the Almighty.
1 Samuel 23:28
Sela Hammahlekoth <05555> [Sela-hammahlekoth. that is, the rock of divisions.]
Because, says the Targum, "the heart of the king was divided to go hither and thither." Here Saul was obliged to separate himself from David, in order to go and oppose the invading Philistines; which deliverance of David was of such a nature as made the Divine interposition fully visible.