New Revised Standard Version
His eldest brother Eliab heard him talking to the men; and Eliab’s anger was kindled against David. He said, “Why have you come down? With whom have you left those few sheep in the wilderness? I know your presumption and the evil of your heart; for you have come down just to see the battle.”

Contemporary English Version
David's oldest brother Eliab heard him talking with the soldiers. Eliab was angry with him and said, "What are you doing here, anyway? Who's taking care of your little flock of sheep out in the desert? You spoiled brat! You came here just to watch the fighting, didn't you?"

New American Bible
When Eliab, his oldest brother, heard him speaking with the men, he grew angry with David and said: “Why did you come down? With whom have you left those sheep in the wilderness? I know your arrogance and dishonest heart. You came down to enjoy the battle!”

Douay-Rheims Bible
Now when Eliab his eldest brother heard this, when he was speaking with others, he was angry with David, and said: Why camest thou hither? and why didst thou leave those few sheep in the desert? I know thy pride, and the wickedness of thy heart: that thou art come down to see the battle.

Now when Eliab his eldest brother heard this, when he was speaking with others, he was angry with David, and said: Why camest thou hither? and why didst thou leave those few sheep in the desert? I know thy pride, and the wickedness of thy heart: that thou art come down to see the battle.

Eliab's anger

1 Samuel 16:13 Then Samuel took the horn of oil, and anointed him in the midst of his brethren: and the Spirit of the Lord came upon David from that day forward: and Samuel rose up, and went to Ramatha.

Genesis 37:4,8,11 And his brethren seeing that he was loved by his father, more than all his sons, hated hem, and could not speak peaceably to him. . . .

Proverbs 18:19 A brother that is helped by his brother, is like a strong city: and judgments are like the bars of cities.

Proverbs 27:4 Anger hath no mercy: nor fury, when it breaketh forth: and who can bear the violence of one provoked?

Ecclesiastes 4:4 Again I considered all the labours of men, and I remarked that their industries are exposed to the envy of their neighbour: so in this also there is vanity, and fruitless care.

Matthew 10:36 And a man's enemies shall be they of his own household.

Matthew 27:18 For he knew that for envy they had delivered him.

Mark 3:21 And when his friends had heard of it, they went out to lay hold on him. For they said: He is become mad.

with

1 Samuel 17:20 David, therefore, arose in the morning, and gave the charge of the flock to the keeper: and went away loaded, as Isai had commanded him. And he came to the place of Magala, and to the army, which was going out to fight, and shouted for the battle.

I know

1 Samuel 16:7 And the Lord said to Samuel: Look not on his countenance, nor on the height of his stature: because I have rejected him, nor do I judge according to the look of man: for man seeth those things that appear, but the Lord beholdeth the heart.

Psalm 35:11 Unjust witnesses rising up have asked me things I knew not.

Jude 1:10 But these men blaspheme whatever things they know not: and what things soever they naturally know, like dumb beasts, in these they are corrupted.