We ought to rejoice in another’s victories, yet king Saul was envious of the honor David had received, and his not so much. Please read 1 Samuel 16 through 18 for today’s reading.
And it came to pass on the morrow, that the evil spirit from God came upon Saul, and he prophesied in the midst of the house: and David played with his hand, as at other times: and there was a javelin in Saul’s hand. And Saul cast the javelin; for he said, “I will smite David even to the wall with it.” And David avoided out of his presence twice. And Saul was afraid of David, because the LORD was with him, and was departed from Saul.
Therefore Saul removed him from him, and made him his captain over a thousand; and he went out and came in before the people. And David behaved himself wisely in all his ways; and the LORD was with him. Wherefore when Saul saw that he behaved himself very wisely, he was afraid of him. But all Israel and Judah loved David, because he went out and came in before them.
1 Samuel 18:10-16