What does duncan mean in Macbeth the play when he says O valiant cousin worthy gentleman?

When Duncan says "O valiant cousin, worthy gentleman" in Macbeth, he is praising Macbeth for his bravery and noble character. He is impressed by Macbeth's military prowess and his loyalty to the Scottish crown. Duncan's words also reflect his trust and admiration for Macbeth, as he refers to him as his "cousin" and "worthy gentleman." These phrases suggest that Duncan considers Macbeth to be a close and valued member of his family and court.