'Rulers' in the Bible

Lifting the poor out of the dust, and him who is in need out of the lowest place, to give them their place among rulers, and for their heritage the seat of glory: for the pillars of the earth are the Lord's and he has made them the base of the world.

Then the rulers of the Philistines went out to war: and whenever they went out, David did more wisely than all the other servants of Saul, so that his name became greatly honoured.

Then the rulers of the Philistines said, What are these Hebrews doing here? And Achish said to the rulers of the Philistines, Is this not David, the servant of Saul the king of Israel, who has been with me for a year or two, and I have never seen any wrong in him from the time when he came to me till now?

But the rulers of the Philistines were angry with him, and said to him, Make the man go back to the place you have given him; do not let him go down with us to the fight, or he may be turned against us and be false to us: for how will this man make peace with his lord? will it not be with the heads of these men?

And Achish in answer said, It is true that in my eyes you are good, like an angel of God: but still, the rulers of the Philistines have said, He is not to go up with us to the fight.